US3274595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency modulated pulse radar system
Assignee: Individual
•
Filing: 1950-04-13
•
Granted: 1966-09-20
•
Expires: 1970-04-13
Abstract
No abstract record available.
Inventors
- 👤 Robert M Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:32
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A PULSE ECHO LOCATOR SYSTEM HAVING REDUCED SUSCEPTIBILITY TO INTERFERENCE THE COMBINATION OF FREQUENCY MODULATION TRANSMITTER MEANS FOR PRODUCING RADIO FREQUENCY PULSE SIGNALS POSSESSING CARRIER FRQUENCY MODULATIONS THEREIN, AN ANTENNA SYSTEM CONNECTED TO THE TRANSMITTER MEANS FOR EMITTING GENERATED PULSE SIGNALS AND FOR INTERCEPTING RETURN SIGNALS, STORAGE MEANS FOR RECORDING THE PULSE SIGNALS, PLAYBACK MEANS FOR CONTROLLING THE REPRODUCTION OF RECORDED PULSE SIGNALS IN COINCIDENCE WITH THE RECEIPT OF RETURN SIGNALS FROM A SELECTED RANGE, AND MIXING MEANS FOR COMBINING REPRODUCED SIGNALS AND RETURN SIGNALS TO OBTAIN CANCELLATION OF FREQUENCY MODULATIONS IN THE RETURN SIGNALS.
Claim 2
Dependent Claim
96 words
IN A PULSE ECHO LOCATOR SYSTEM HAVING REDUCED SUSCEPTIBILITY TO INTERFERENCE THE COMBINATION OF FREQUENCY MODULATION TRANSMITTER MEANS FOR PRODUCING RADIO FREQUENCY PULSE SIGNALS POSSESSING CARRIER FRQUENCY MODULATIONS THEREIN, AN ANTENNA SYSTEM CONNECTED TO THE TRANSMITTER MEANS FOR EMITTING GENERATED PULSE SIGNALS AND FOR INTERCEPTING RETURN SIGNALS, STORAGE MEANS FOR RECORDING THE PULSE SIGNALS, PLAYBACK MEANS FOR CONTROLLING THE REPRODUCTION OF RECORDED PULSE SIGNALS IN COINCIDENCE WITH THE RECEIPT OF RETURN SIGNALS FROM A SELECTED RANGE, AND MIXING MEANS FOR COMBINING REPRODUCED SIGNALS AND RETURN SIGNALS TO OBTAIN CANCELLATION OF FREQUENCY MODULATIONS IN THE RETURN SIGNALS.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |