US744858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock for post-office lock-boxes.
Assignee: Individual
•
Filing: 1902-05-28
•
Granted: 1903-11-24
•
Expires: 1922-05-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Durnbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:23
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/0031; E05B37/0034; Y; Y10; Y10S; Y10S70/00; Y10S70/71; Y10T; Y10T70/00; Y10T70/70; Y10T70/7147
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) | 1906-11-23 | 1907-05-25 | 1907-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-11-23 | 1911-05-25 | 1911-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-11-23 | 1915-05-25 | 1915-11-24 | $7700.00 | Window Closed / Lapsed |