US3217255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous communication system
Assignee: Collins Radio Co
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Filing: 1962-11-26
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Granted: 1965-11-09
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Expires: 1982-11-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel L Broadhead
- 👤 John F Mcinerney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:41
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/02; H03J7/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
A FREQUENCY STABILIZING SYSTEM COMPRISING A TRANSMITTER HAVING A RADIATING MEANS, A MODULATING MEANS CONNECTED TO THE RADIATING MEANS, AN IF OSCILLATOR CONNECTED TO THE MODULATING MEANS, A FIRST SWITCH CONNECTED BETWEEN THE RADIATING MEANS AND THE IF OSCILLATOR, A PUSHTO-TALK SWITCH, MEANS TO ENERGIZE SAID PUSH-TO-TALK SWITCH, SAID PUSH-TO-TALK SWITCH BEING CONNECTED TO THE FIRST SWITCH TO CLOSE THE FIRST SWITCH WHEN THE PUSH-TO-TALK SWITCH IS ENERGIZED, A TIME DELAY CIRCUIT FORMING A PART OF THE FIRST SWITCH TO OPEN THE FIRST SWITCH SHORTLY AFTER THE PUSH-TO-TALK SWITCH IS ENERGIZED, AND A MODULATING SOURCE CONNECTED TO THE MODULATOR.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |