Patent US2540786A successfully refreshed from Google Patents.
US2744779A
Expired / Lapsed
US
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Door holder
Assignee: OSCAR C RIXSON CO
•
Filing: 1953-08-17
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Granted: 1956-05-08
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Expires: 1973-08-17
Abstract
No abstract record available.
Inventors
- 👤 David H Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:27
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/12; E05C17/24; E05C17/28; Y; Y10; Y10T; Y10T292/00; Y10T292/28; Y10T292/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1728693A
Cited
US2277316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |