US2859433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Own doppler nullifier
Assignee: Individual
•
Filing: 1950-12-29
•
Granted: 1958-11-04
•
Expires: 1970-12-29
Abstract
No abstract record available.
Inventors
- 👤 Harold L Saxton
- 👤 Sanford P Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:45
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/02; G01S15/50; G01S15/52; G01S1/00; G01S1/72; Y; Y10; Y10S; Y10S367/00; Y10S367/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1737147A
Cited
US2303444A
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US2546973A
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US2541066A
Cited
US2418538A
Cited
US2431854A
Cited
US2621243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |