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Patent US3486355A successfully refreshed from Google Patents.
US3486355A
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Safety key and lock
Assignee: Individual
•
Filing: 1968-02-21
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Granted: 1969-12-30
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Expires: 1988-02-21
Abstract
No abstract record available.
Inventors
- 👤 Oliver C Halfyard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:39
CPC Classifications
E; E05; E05B; E05B27/00; E05B27/0042; E05B35/00; E05B35/003; E05B19/00; E05B19/0017; E05B19/0041; E05B19/0052; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/778; Y10T70/7791; Y10T70/7802; Y10T70/7819; Y10T70/7915; Y10T70/7932; Y10T70/7944
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1382826A
Cited
US703429A
Cited
US709018A
Cited
US1105093A
Cited
US1090736A
Cited
US1098068A
Cited
US1114368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |