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US775768A
Expired / Lapsed
US
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Apparatus for operating armored hatches, trap-doors, or the like.
Assignee: "LONG ARM" SYSTEM Co
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Filing: 1904-07-25
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Granted: 1904-11-22
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Expires: 1924-07-25
Abstract
No abstract record available.
Inventors
- 👤 William Barnum Cowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:16
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/611; E05F15/63; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/55
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) | 1907-11-22 | 1908-05-23 | 1908-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-11-22 | 1912-05-23 | 1912-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-11-22 | 1916-05-23 | 1916-11-22 | $7700.00 | Window Closed / Lapsed |