Patent US515891A successfully refreshed from Google Patents.
Patent US5697944A successfully refreshed from Google Patents.
US3124657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
peterson
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:10
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/60; H04M1/6033; H04M1/72; H04M1/725; H04M1/72502
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A TELEPHONE SYSTEM, A TELEPHONE LINE AND A WIRELESS LOUDSPEAKING TELEPHONE COMPRISING: A TRANSMITTING UNIT INCLUDING SIGNAL GENERATING MEANS, A TRANSMITTING ANTENNA CONNECTED TO SAID SIGNAL GENERATING MEANS FOR RADIATING SIGNALS GENERATED BY SAID MEANS, AND SWITCH MEANS OPERATED FOR ACTUATING SAID SIGNAL GENERATING MEANS; A RECEIVING UNIT INCLUDING VOICE FREQUENCY SIGNAL REPRODUCTION MEANS, A RECEIVING ANTENNA FOR RECEIVING SIGNALS FROM SAID TRANSMITTING UNIT, A COUPLING NETWORK, LINE CONNECTING
Claim 2
Dependent Claim
70 words
IN A TELEPHONE SYSTEM, A TELEPHONE LINE AND A WIRELESS LOUDSPEAKING TELEPHONE COMPRISING: A TRANSMITTING UNIT INCLUDING SIGNAL GENERATING MEANS, A TRANSMITTING ANTENNA CONNECTED TO SAID SIGNAL GENERATING MEANS FOR RADIATING SIGNALS GENERATED BY SAID MEANS, AND SWITCH MEANS OPERATED FOR ACTUATING SAID SIGNAL GENERATING MEANS; A RECEIVING UNIT INCLUDING VOICE FREQUENCY SIGNAL REPRODUCTION MEANS, A RECEIVING ANTENNA FOR RECEIVING SIGNALS FROM SAID TRANSMITTING UNIT, A COUPLING NETWORK, LINE CONNECTING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |