Patent US2690070A successfully refreshed from Google Patents.
US2690070A
Expired / Lapsed
US
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Rotary tumbler cylinder lock
Assignee: Yale and Towne Manufacturing Co
•
Filing: 1951-05-26
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Granted: 1954-09-28
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Expires: 1971-05-26
Abstract
No abstract record available.
Inventors
- 👤 Roy C Spain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:21
CPC Classifications
E; E05; E05B; E05B29/00; E05B29/0013; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7565; Y10T70/7588; Y10T70/7593; Y10T70/7621; Y10T70/7627; Y10T70/7633; Y10T70/778; Y10T70/7791; Y10T70/7842; Y10T70/787; Y10T70/7915; Y10T70/7932; Y10T70/7944
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US212957A
Cited
US318861A
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US688070A
Cited
US1093817A
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US1463495A
Cited
US1616255A
Cited
US2318887A
Cited
US2298698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |