Patent US2536327A successfully refreshed from Google Patents.
US2536327A
Expired / Lapsed
US
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Sonic proximity fuse
Assignee: RCA Corp
•
Filing: 1946-01-30
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Granted: 1951-01-02
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Expires: 1966-01-30
Abstract
No abstract record available.
Inventors
- 👤 William A Tolson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:35
CPC Classifications
F; F42; F42C; F42C13/00; F42C13/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1333744A
Cited
US1934416A
Cited
US2060198A
Cited
GB552351A
Cited
US2341351A
Cited
US2400309A
Cited
US2356791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |