US3304501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay circuit for briefly holding a selective call transmitter energized
Assignee: Motorola Solutions Inc
•
Filing: 1964-08-20
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Granted: 1967-02-14
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Expires: 1984-08-20
Abstract
No abstract record available.
Inventors
- 👤 Ross E Ruthenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:42
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04W88/022; H04W88/025; H04W88/027
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
133 words
A CONTROL SYSTEM FOR A TRANSMITTER WHICH INCLUDES A POWER SUPPLY FOR ENERGIZING THE TRANSMITTER, SAID CONTROL SYSTEM INCLUDING IN COMBINATION, ACTUATING MEANS PROVIDING A FIRST CONTROL POTENTIAL TO CONDITION THE TRANSMITTER FOR OPERATION, SAID ACTUATING MEANS BEING COUPLED TO THE POWER SUPPLY AND APPLYING SAID FIRST CONTROL POTENTIAL THERETO FOR CAUSING ENERGIZATION OF THE TRANSMITTER, AND DELAY MEANS COUPLED TO SAID ACTUATING MEANS AND INCLUDING A TRANSISTOR AND A SATURABLE TRANSFORMER FOR CONTROLLING CONDUCTION OF SAID TRANSISTOR, SAID SATURABLE TRANSFORMER INCLUDING A FIRST WINDING COUPLED TO SAID ACTUATING MEANS FOR RECEIVING SAID FIRST CONTROL POTENTIAL AND A SECOND WINDING COUPLED TO SAID TRANSISTOR, SAID SECOND WINDING APPLYING A VOLTAGE TO SAID TRANSISTOR FOR RENDERING THE SAME CONDUCTING TO PROVIDE A SECOND CONTROL POTENTIAL WHICH CONTINUES FOR A PREDETERMINED TIME DURATION IN RE-
References Cited (Backward Citations)
US2974221A
Cited
US3018389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |