Patent US2547076A successfully refreshed from Google Patents.
US2547076A
Expired / Lapsed
US
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Safety latch and switch
Assignee: RCA Corp
•
Filing: 1946-01-25
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Granted: 1951-04-03
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Expires: 1966-01-25
Abstract
No abstract record available.
Inventors
- 👤 Bois William R Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:16
CPC Classifications
B; B65; B65B; B65B57/00; B65B57/02; B67; B67C; B67C3/00; B67C3/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1112155A
Cited
US1069870A
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US1358255A
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US1604440A
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US1825751A
Cited
US1828324A
Cited
US1957534A
Cited
US2013144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |