US3140609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal transmitting and control system
Assignee: Sperry Sun Inc
•
Filing: 1956-11-08
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Granted: 1964-07-14
•
Expires: 1976-11-08
Abstract
No abstract record available.
Inventors
- 👤 Fred M Mayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:37
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/40; G01F23/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
IN COMBINATION, A PLURALITY OF SIGNAL ORIGINATING STATIONS, SWITCHING MEANS, MEANS PROVIDING AN INDIVIDUAL SINGLE TRANSMITTING CHANNEL COMPRISING ONLY TWO CONDUCTIVE PATHS BETWEEN EACH OF SAID STATIONS AND SAID SWITCHING MEANS, MEANS SUPPLYING POWER CURRENT THROUGH SAID SWITCHING MEANS AND TRANSMITTING CHANNELS SELECTIVELY TO SAID STATIONS, MEANS SUPPLYING CONTROL CURRENTS DIFFERENT FROM SAID POWER CURRENT THROUGH SAID SWITCHING MEANS AND THE SAME TRANSMITTING CHANNELS SELECTIVELY TO SAID STATIONS, INDICATING MEANS CONNECTED TO SAID SWITCHING MEANS, AND MEANS IN SAID ORIGINATING STATIONS CONTROLLED BY SAID POWER CURRENT AND SAID CONTROL CURRENTS FOR SELECTIVELY PROVIDING A PLURALITY OF DIFFERENT HIGH FREQUENCY SIGNALS THROUGH THE SAME TRANSMITTING CHANNELS AND SAID SWITCHING MEANS TO SAID INDICATING MEANS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |