Patent US2584904A successfully refreshed from Google Patents.
US2584904A
Expired / Lapsed
US
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Hinge mechanism for swinging barriers
Assignee: Individual
•
Filing: 1945-09-19
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Granted: 1952-02-05
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Expires: 1965-09-19
Abstract
No abstract record available.
Inventors
- 👤 James F Monger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:54
CPC Classifications
B; B61; B61D; B61D17/00; B61D17/04; B61D17/20; E; E05; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/12; E05F1/123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US199383A
Cited
US1172408A
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DE332660C
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AT90112B
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US1611238A
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US2090492A
Cited
US2243854A
Cited
US2234059A
Cited
US2233051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |