US2477567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for detecting presence and movement of bodies
Assignee: Eastern Ind Inc
•
Filing: 1944-10-07
•
Granted: 1949-08-02
•
Expires: 1964-10-07
Abstract
No abstract record available.
Inventors
- 👤 John L Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:57
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; B; B61; B61L; B61L25/00; B61L25/02; B61L25/021; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2188293A
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US2206896A
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US2268587A
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US2232858A
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US2301929A
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US2402464A
Cited
US2403755A
Cited
US2362503A
Cited
US2409560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |