US3467855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Object detector and method for distinguishing between objects detected including a pair of radio frequency oscillators
Assignee: Individual
•
Filing: 1967-08-03
•
Granted: 1969-09-16
•
Expires: 1987-08-03
Abstract
No abstract record available.
Inventors
- 👤 Edwin Rance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:19
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2271951A
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US2167630A
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US2376610A
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US2422742A
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US2442805A
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US2581394A
Cited
US3281672A
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US3355658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |