Patent US4763243A successfully refreshed from Google Patents.
Patent US1854584A successfully refreshed from Google Patents.
US1854584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operating means
Assignee: Individual
•
Filing: 1928-04-02
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Granted: 1932-04-19
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Expires: 1948-04-02
Abstract
No abstract record available.
Inventors
- 👤 Charles W Gorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:53
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603
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) | 1935-04-19 | 1935-10-19 | 1936-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-19 | 1939-10-19 | 1940-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-19 | 1943-10-19 | 1944-04-19 | $7700.00 | Window Closed / Lapsed |