US3548446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concealed hinges
Assignee: Societe Franco Hispano Americaine FRANCISPAM
•
Filing: 1968-02-20
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Granted: 1970-12-22
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Expires: 1988-02-20
Abstract
No abstract record available.
Inventors
- 👤 Robert R Hocq
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:06
CPC Classifications
E; E05; E05D; E05D3/00; E05D3/06; E05D3/18; F; F23; F23Q; F23Q2/00; F23Q2/34; F23Q2/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2039130A
Cited
US2133554A
Cited
US2137751A
Cited
US2149973A
Cited
US2200511A
Cited
US2298767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |