Patent US2322724A successfully refreshed from Google Patents.
US2322724A
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US
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Combination lock
Assignee: Yale and Towne Manufacturing Co
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Filing: 1941-01-30
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Granted: 1943-06-22
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Expires: 1961-01-30
Abstract
No abstract record available.
Inventors
- 👤 Sylvanus M Archer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:17
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/08; E05B65/00; E05B65/0075; E05B65/0082; Y; Y10; Y10T; Y10T70/00; Y10T70/20; Y10T70/70; Y10T70/7153; Y10T70/7181; Y10T70/7198; Y10T70/7237; Y10T70/7243; Y10T70/735; Y10T70/7367; Y10T70/7379; Y10T70/7384
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-06-21 | 1946-12-21 | 1947-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-06-21 | 1950-12-21 | 1951-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-06-21 | 1954-12-21 | 1955-06-22 | $7700.00 | Window Closed / Lapsed |