Patent US3407986A successfully refreshed from Google Patents.
US1544751A
Expired / Lapsed
US
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Door opening and closing device
Assignee: Individual
•
Filing: 1921-10-13
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Granted: 1925-07-07
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Expires: 1941-10-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph N Haynes
- 👤 Blanche K Haynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:09
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; E05F15/53
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) | 1928-07-06 | 1929-01-05 | 1929-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-07-06 | 1933-01-05 | 1933-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-07-06 | 1937-01-05 | 1937-07-07 | $7700.00 | Window Closed / Lapsed |