Patent US4639253A successfully refreshed from Google Patents.
Patent US2855588A successfully refreshed from Google Patents.
US2855588A
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Combination lock and burglar alarm
Assignee: Individual
•
Filing: 1954-09-15
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Granted: 1958-10-07
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Expires: 1974-09-15
Abstract
No abstract record available.
Inventors
- 👤 Harry W Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:13
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22; Y; Y10; Y10S; Y10S70/00; Y10S70/49; Y10T; Y10T70/00; Y10T70/20; Y10T70/25; Y10T70/70; Y10T70/7006; Y10T70/7011; Y10T70/7017; Y10T70/7051; Y10T70/7062; Y10T70/7068; Y10T70/80; Y10T70/8027; Y10T70/8216
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US893802A
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US1324499A
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US1732276A
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US1710542A
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US1923968A
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US1905965A
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US2225715A
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US2203907A
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US2436809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |