Patent US2670466A successfully refreshed from Google Patents.
US2670466A
Expired / Lapsed
US
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Burglar alarm system
Assignee: W R FINDLAY
•
Filing: 1950-03-24
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Granted: 1954-02-23
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Expires: 1970-03-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:23
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1158146A
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US1238823A
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US1365693A
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US1845621A
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US2191926A
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US2243804A
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US2225464A
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US2346171A
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US2419957A
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US2440002A
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US2491987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |