Patent US3148287A successfully refreshed from Google Patents.
US3148287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal phase sensing and maintaining system
Assignee: CBS Broadcasting Inc
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Filing: 1961-03-09
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Granted: 1964-09-08
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Expires: 1981-03-09
Abstract
No abstract record available.
Inventors
- 👤 Benjamin B Bauer
- 👤 Abraham A Goldberg
- 👤 George D Pollack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:04
CPC Classifications
H; H04; H04R; H04R29/00; H04R2420/00; H04R2420/05; H04R5/00; H04R5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN SIGNAL TRANSMISSION APPARATUS, THE COMBINATION OF FIRST SIGNAL TRANSMISSION CHANNEL MEANS FOR A FIRST SIGNAL, SECOND SIGNAL TRANSMISSION CHANNEL MEANS FOR A SECOND SIGNAL, SIGNAL PHASE CHANGING MEANS IN ONE OF SAID TRANSMISSION CHANNEL MEANS, MEANS COUPLED TO SAID FIRST AND SECOND TRANSMISSION CHANNEL MEANS FOR PRODUCING A FIRST MONITORING SIGNAL REPRESENTING THE SUM OF SAID FIRST AND SECOND SIGNALS, MEANS COUPLED TO SAID FIRST AND SECOND TRANSMISSION MEANS FOR PRODUCING A SECOND MONITORING SIGNAL REPRESENTING THE DIFFERENCE BETWEEN SAID FIRST AND SECOND SIGNALS, AND MEANS RESPONSIVE TO SAID FIRST AND SECOND MONITORING SIGNALS AND RENDERED OPERATIVE FOR A GIVEN MAGNITUDE RELATIONSHIP BETWEEN SAID MONITORING SIGNALS FOR ACTUATING SAID PHASE CHANGING MEANS.
Claim 2
Dependent Claim
113 words
IN SIGNAL TRANSMISSION APPARATUS, THE COMBINATION OF FIRST SIGNAL TRANSMISSION CHANNEL MEANS FOR A FIRST SIGNAL, SECOND SIGNAL TRANSMISSION CHANNEL MEANS FOR A SECOND SIGNAL, SIGNAL PHASE CHANGING MEANS IN ONE OF SAID TRANSMISSION CHANNEL MEANS, MEANS COUPLED TO SAID FIRST AND SECOND TRANSMISSION CHANNEL MEANS FOR PRODUCING A FIRST MONITORING SIGNAL REPRESENTING THE SUM OF SAID FIRST AND SECOND SIGNALS, MEANS COUPLED TO SAID FIRST AND SECOND TRANSMISSION MEANS FOR PRODUCING A SECOND MONITORING SIGNAL REPRESENTING THE DIFFERENCE BETWEEN SAID FIRST AND SECOND SIGNALS, AND MEANS RESPONSIVE TO SAID FIRST AND SECOND MONITORING SIGNALS AND RENDERED OPERATIVE FOR A GIVEN MAGNITUDE RELATIONSHIP BETWEEN SAID MONITORING SIGNALS FOR ACTUATING SAID PHASE CHANGING MEANS.
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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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |