US3267474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doppler shift detector
Assignee: Individual
•
Filing: 1964-02-24
•
Granted: 1966-08-16
•
Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Malcolm B Greenlee
- 👤 John B Fennell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:26
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/583
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A DOPPLER FREQUENCY MEASURING SYSTEM COMPRISING MEANS FOR RECEIVING DOPPLER PULSES, A PRESET COUNTER FOR COUNTING SAID DOPPLER PULSES TO A PREDETERMINED NUMBER, AN OSCILLATOR, A PERIOD COUNTER FOR COUNTING THE PULSES FROM SAID OSCILLATOR, CONTROL MEANS FOR STOPPING THE COUNTING OF SAID PERIOD COUNTER WHEN SAID PRESET COUNTER HAS REGISTERED THE PREDETERMINED NUMBER COUNTS, A CLOCK, AND
Claim 2
Dependent Claim
58 words
A DOPPLER FREQUENCY MEASURING SYSTEM COMPRISING MEANS FOR RECEIVING DOPPLER PULSES, A PRESET COUNTER FOR COUNTING SAID DOPPLER PULSES TO A PREDETERMINED NUMBER, AN OSCILLATOR, A PERIOD COUNTER FOR COUNTING THE PULSES FROM SAID OSCILLATOR, CONTROL MEANS FOR STOPPING THE COUNTING OF SAID PERIOD COUNTER WHEN SAID PRESET COUNTER HAS REGISTERED THE PREDETERMINED NUMBER COUNTS, A CLOCK, AND
References Cited (Backward Citations)
US3172108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |