US2800347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door locks
Assignee: Sargent Manufacturing Co
•
Filing: 1954-06-28
•
Granted: 1957-07-23
•
Expires: 1974-06-28
Abstract
No abstract record available.
Inventors
- 👤 Jr George W Wardwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:12
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/005; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/098; Y10T292/0982; Y10T292/0983; Y10T292/0984; Y10T292/0985; Y10T292/1014; Y10T292/1022; Y10T292/1031; Y10T292/59; Y10T292/88; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5394; Y10T70/5465
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |