Communications Manufacturing Company

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04M TELEPHONIC COMMUNICATION 1162

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5235629 Apparatus for telephone line checkingJan 13, 92Aug 10, 93[H04M]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2004/0086,086 Automated subscriber loop identification and data transfer for subscriber loop testingAbandonedOct 30, 02May 06, 04[H04M]
6442239 Telephone line longitudinal balance tester and methodExpiredJul 23, 99Aug 27, 02[H04M]
6201853 Telephone technician's remote assist apparatus and methodExpiredJul 13, 99Mar 13, 01[H04M]
5903624 Data terminal for telephone circuitsExpiredMar 08, 93May 11, 99[H04M]
5903817 Automated hard-copy mobile remote communication apparatus, system and methodExpiredSep 25, 96May 11, 99[H04B]
5896569 Wireless access to telephone network dial toneExpiredMay 15, 96Apr 20, 99[H04Q]
5377259 Data terminal having program language support library, and related methodExpiredSep 16, 93Dec 27, 94[H04M]
5025466 Telephone test instrumentExpiredMar 13, 90Jun 18, 91[H04M]
4991195 Apparatus and method for testing a telephone circuit protectorExpiredMar 16, 90Feb 05, 91[H04M]
4922516 Telephone technician's terminals with auto-selection of dial pulse on DTMF signallingExpiredJun 02, 89May 01, 90[H04M]
4837811 Telephone technician's terminalsExpiredJan 25, 88Jun 06, 89[H04M]

Top Inventors for This Owner

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