US2872676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio location system
Assignee: Seismograph Service Corp
•
Filing: 1954-04-23
•
Granted: 1959-02-03
•
Expires: 1974-04-23
Abstract
No abstract record available.
Inventors
- 👤 William R Hunsicker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:58
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/20; G01S1/30; G01S1/304; G01S13/00; G01S13/74; G01S13/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2144203A
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US2248727A
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US2507739A
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US2598290A
Cited
US2507178A
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US2513315A
Cited
US2652558A
Cited
US2652559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |