Patent US762741A successfully refreshed from Google Patents.
US762741A
Expired / Lapsed
US
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Trap-door opener.
Assignee: Individual
•
Filing: 1904-02-18
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Granted: 1904-06-14
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Expires: 1924-02-18
Abstract
No abstract record available.
Inventors
- 👤 Christian Hansen Moos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:36
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/02; Y; Y10; Y10S; Y10S16/00; Y10S16/08
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) | 1907-06-14 | 1907-12-14 | 1908-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-06-14 | 1911-12-14 | 1912-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-06-14 | 1915-12-14 | 1916-06-14 | $7700.00 | Window Closed / Lapsed |