Patent US3520161A successfully refreshed from Google Patents.
US3520161A
Expired / Lapsed
US
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Key controlled lock having built-in switch actuator operated by insertion and removal of key
Assignee: Briggs and Stratton Corp
•
Filing: 1968-07-17
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Granted: 1970-07-14
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Expires: 1988-07-17
Abstract
No abstract record available.
Inventors
- 👤 Edward N Jacobi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:44
CPC Classifications
E; E05; E05B; E05B45/00; E05B45/06; E05B45/0605; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7667; Y10T70/7757; Y10T70/80; Y10T70/8027; Y10T70/827
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2063088A
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US2105350A
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US2261868A
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US2613258A
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US3020523A
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US3138780A
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US3144537A
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US3393540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |