US3281838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic angle tracking apparatus
Assignee: Individual
•
Filing: 1964-12-23
•
Granted: 1966-10-25
•
Expires: 1984-12-23
Abstract
No abstract record available.
Inventors
- 👤 Oscar L Morris
- 👤 Arthur F Penfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:15
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/66; G01S13/68
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
IN A TARGET TRACKING RADAR SYSTEM, THE METHOD OF AUTOMATIC ANGLE TRACKING COMPRISING THE STEPS OF TRANSMITTING INTO SPACE THREE RADIO FREQUENCY PULSES HAVING A PREDETERMINED TIME SPACING BETWEEN EACH OF SAID THREE PULSES, DISCRIMINATING BETWEEN THE FIRST TWO OF SAID THREE PULSES REFLECTED BY SAID TARGET TO DETERMINE IF SAID TARGET IS VALID, AND TRACKING THE THIRD PULSE OF SAID THREE PULSES WHEN RECEIVED.
References Cited (Backward Citations)
US2412974A
Cited
US3212090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |