US643957A
Expired / Lapsed
US
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Lock.
Assignee: FERGUSSON LOCK Co
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Filing: 1899-05-31
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Granted: 1900-02-20
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Expires: 1919-05-31
Abstract
No abstract record available.
Inventors
- 👤 Alan Robb Fergusson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:14
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/02; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5394; Y10T70/5465; Y10T70/70; Y10T70/7441; Y10T70/7757
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) | 1903-02-20 | 1903-08-22 | 1904-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-02-20 | 1907-08-22 | 1908-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-02-20 | 1911-08-22 | 1912-02-21 | $7700.00 | Window Closed / Lapsed |