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US3259698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state intercommunication system
Assignee: TDK Micronas GmbH
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Filing: 1963-02-25
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Granted: 1966-07-05
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Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Korda Paul
- 👤 Sidney P Rea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:50
CPC Classifications
H; H04; H04M; H04M9/00; H04M9/001; H04M19/00; H04M19/02; H04M19/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
AN INTERCOMMUNICATION SYSTEM COMPRISING A PLURALITY OF TWO-WIRE LINES FOR EXTENDING CONNECTION BETWEEN SAID SYSTEM AND DISTANT OFFICES, A PLURALITY OF DIAL LINE SWITCHING MEANS, MEANS COMPRISING FOUR-WIRE LINES FOR COMPLETING CONNECTIONS THROUGH SAID SYSTEM VIA SAID DIAL LINE SWITCHING MEANS TO SAID TOW-WIRE LINES, MEANS COMPRISING 2-TO-4 WIRE SIGNAL CONVERTERS FOR INTERCONNECTING SAID TWO-WIRE AND FOUR-WIRE LINES, A HEADEST COMPRISING AT LEAST ONE EARPHONE AND A MICROPHONE, A PLURALITY OF COMMON TALKING BUSSES EXTENDING THROUGH SAID DIAL LINE SWITCHING MEANS, MEANS ASSOCIATED WITH SOME OF SAID BUSSES FOR EXTENDING CONNECTIONS TO SAID EARPHONE, MEANS ASSOCIATED WITH OTHER OF SAID BUSSES FOR EXTENDING CONNECTIONS TO SAID MICROPHONE, AND MEANS COMPRISING SAID DIAL LINE SWITCHING MEANS FOR INDEPENDENTLY SWITCHING THE TWOWIRE CONNECTIONS TO SAID COMMON BUSSES, THEREBY INDIVIDUALIZING THE HEADEST EARPHONE AND MICROPHONE TO SPECIFIC TWO-WIRE CONNECTIONS.
Claim 2
Dependent Claim
136 words
AN INTERCOMMUNICATION SYSTEM COMPRISING A PLURALITY OF TWO-WIRE LINES FOR EXTENDING CONNECTION BETWEEN SAID SYSTEM AND DISTANT OFFICES, A PLURALITY OF DIAL LINE SWITCHING MEANS, MEANS COMPRISING FOUR-WIRE LINES FOR COMPLETING CONNECTIONS THROUGH SAID SYSTEM VIA SAID DIAL LINE SWITCHING MEANS TO SAID TOW-WIRE LINES, MEANS COMPRISING 2-TO-4 WIRE SIGNAL CONVERTERS FOR INTERCONNECTING SAID TWO-WIRE AND FOUR-WIRE LINES, A HEADEST COMPRISING AT LEAST ONE EARPHONE AND A MICROPHONE, A PLURALITY OF COMMON TALKING BUSSES EXTENDING THROUGH SAID DIAL LINE SWITCHING MEANS, MEANS ASSOCIATED WITH SOME OF SAID BUSSES FOR EXTENDING CONNECTIONS TO SAID EARPHONE, MEANS ASSOCIATED WITH OTHER OF SAID BUSSES FOR EXTENDING CONNECTIONS TO SAID MICROPHONE, AND MEANS COMPRISING SAID DIAL LINE SWITCHING MEANS FOR INDEPENDENTLY SWITCHING THE TWOWIRE CONNECTIONS TO SAID COMMON BUSSES, THEREBY INDIVIDUALIZING THE HEADEST EARPHONE AND MICROPHONE TO SPECIFIC TWO-WIRE CONNECTIONS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |