NameLast modifiedSizeDescription
 Parent Directory  -  
 Acoustic Protector Damps Telephone-Line Transients.pdf2020-06-12 20:44 460K 
 Add a Distinctive Ring to your Phone.pdf2009-06-30 04:46 78K 
 Automatic 4 Line Telephone Selector.pdf2020-01-31 21:16 1.9M 
 Automatic Hold Device Errata ME 1989-02.pdf2020-08-21 21:27 134K 
 Call Director.pdf1998-06-30 06:31 1.9M 
 Caller ID Tech Info.pdf2009-08-29 21:18 540K 
 Cordless Phone Supposed Hazards.pdf2009-01-14 05:56 234K 
 DTMF Phone Pad.pdf2020-02-12 04:00 2.0M 
 Distinctive Ring Decoder.pdf2009-11-26 04:15 910K 
 Dual- Application Telephone Security System Part 2 Errata ME 1990-7.pdf2021-01-26 22:06 126K 
 Electronic Ringer for Telephone Lines.pdf2007-02-26 05:00 226K 
 Home Intercom Using Analog Telephones.pdf2020-03-07 06:24 1.4M 
 Inside The Telephone.pdf2002-01-20 07:05 812K 
 Isolated Phone Line Status Indicator.pdf2020-06-10 00:32 734K 
 Isolating Telephone Extensions.pdf2020-08-29 02:20 3.2M 
 Losses In Early Telephone Lines.PDF2004-01-29 22:28 17K 
 Make a Phone Ring to a Simple Tune.pdf2020-06-02 23:33 219K 
 Music On Hold Adapter.pdf2020-02-07 23:03 1.9M 
 Music On Hold Box.pdf2020-12-20 04:36 3.8M 
 Music On Hold Telephone Accessory.pdf2020-06-03 00:07 1.0M 
 Musical Telephone Ringer.pdf2020-12-27 00:40 560K 
 Music on hold Adapter for Analog Telephone Lines.pdf2020-03-24 00:23 479K 
 No Wrong Numbers Telephone Accessory Part 2 RE 1984-04.pdf2020-12-02 06:05 1.3M 
 Optically Coupled Phone Ringer.pdf2009-06-30 05:43 82K 
 Opto Isolator Circuit Shows Phone Line Status.pdf2009-06-30 05:48 85K 
 Phone Activated Audio Muting Circuit.pdf2021-04-02 23:31 806K 
 Phone Activated Night Light.pdf2020-12-30 23:30 492K 
 Phone Beeper for Recording Calls.pdf2020-06-10 00:25 909K 
 Phone Hold with Music.gif2011-09-28 19:00 5.1K 
 Phone Line 'Busy' Indicator Errata ME 1988-10.pdf2020-08-25 21:40 141K 
 Phone Line Monitor.pdf2007-02-01 04:05 211K 
 Phone Line Sentinel.pdf1999-03-11 20:32 197K 
 Phone Line Simulator.pdf2020-02-01 06:00 2.1M 
 Phone Lock.pdf2020-06-03 00:02 622K 
 Phone Minder.pdf2020-07-17 04:51 1.4M 
 Phone Pager.pdf2020-02-02 01:39 2.5M 
 Phone Sentry.pdf2020-02-07 23:03 954K 
 Phone Status Indicator.gif2000-12-08 03:41 6.6K 
 Phone Status Light.pdf2004-05-31 05:31 9.9K 
 Plug-In Remote Ringer.pdf2020-06-02 23:52 1.5M 
 Put Your Telephone On Hold Errata ME 1989-05.pdf2020-08-18 22:33 58K 
 Recreating Sound.pdf2009-09-12 04:50 123K 
 Remote Telephone Ear - Listen via Long Distance.pdf2020-06-12 20:43 827K 
 Remote Telephone RInger.pdf2020-02-09 08:12 271K 
 Ringing Phone Light Flash.pdf1998-09-11 02:15 48K 
 Super Hold tor Telephone.pdf2020-03-23 23:53 1.4M 
 Telco In A Box.pdf2011-07-03 00:51 445K 
 Telco Line Problems.pdf2021-04-23 03:00 170K 
 Tele-Toll Timer.pdf2020-02-23 04:13 1.7M 
 Teleconferencing System.pdf2020-06-26 04:23 154K 
 Telephone-Related Ascii Schematics.pdf1999-05-17 15:22 40K 
 Telephone Add On Devices.pdf2020-10-21 04:15 247K 
 Telephone Amplifier.pdf2020-06-04 20:45 1.0M 
 Telephone Audio Interface.pdf2020-02-09 23:17 1.2M 
 Telephone Bell Extender (2).pdf2020-06-02 23:56 1.1M 
 Telephone Bell Extender.pdf2009-05-25 03:04 125K 
 Telephone Call Recording Adapter.pdf2003-10-03 05:56 50K 
 Telephone Call Restrictor (2).pdf2020-08-16 01:55 401K 
 Telephone Call Restrictor.pdf2010-09-15 04:00 1.0M 
 Telephone Call Screener.pdf2020-07-19 00:50 3.7M 
 Telephone Call Timer.pdf2020-06-03 00:00 940K 
 Telephone Dialer Vocalizer.pdf2020-11-29 23:33 436K 
 Telephone Flasher.pdf2021-01-24 02:34 448K 
 Telephone Hold Button.pdf2020-03-15 21:53 534K 
 Telephone In Use Monitor Errata.pdf2009-06-30 04:49 14K 
 Telephone Line Controller.pdf2019-06-04 03:45 2.8M 
 Telephone Line Grabber.pdf2016-10-16 21:14 698K 
 Telephone Line Interface.pdf2009-05-08 03:35 51K 
 Telephone Line Simulator.pdf2014-02-09 06:11 1.5M 
 Telephone Line Tester.pdf2009-06-30 05:17 303K 
 Telephone Operated Remote Power Switch.pdf2020-10-21 22:01 5.3M 
 Telephone Pickup for Dial Phones.pdf2020-06-10 00:18 958K 
 Telephone Record-Play Accesory.pdf2009-07-23 04:07 246K 
 Telephone Recording Adapter.pdf2020-07-17 04:43 1.0M 
 Telephone Ring Detector.pdf2009-02-13 04:28 89K 
 Telephone Ringing and Speech Circuit.pdf2020-06-02 23:30 214K 
 Telephone Scrambler.pdf2018-06-22 02:02 5.0M 
 Telephone Status Monitor.pdf2010-07-01 05:51 224K 
 Telephone Tester Detects Line Distortion.pdf2020-06-12 20:42 437K 
 Telephone Usage Monitor and Controller.pdf2020-03-19 21:56 4.1M 
 The Life of a Phone Hacker.pdf2009-06-30 05:11 251K 
 The Party Line Phone Line Simulator.pdf2016-10-16 20:42 1.2M 
 The Phone Sentry.pdf2009-11-26 06:48 565K 
 Turn On Appliances Via Long Distance.pdf2020-06-02 23:49 2.0M