Patent US3485346A successfully refreshed from Google Patents.
US3485346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinged roof structure
Assignee: Individual
•
Filing: 1967-05-08
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Granted: 1969-12-23
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Expires: 1987-05-08
Abstract
No abstract record available.
Inventors
- 👤 Charles M Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:32
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/16; E04B7/163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732936A
Cited
US2602968A
Cited
US2604060A
Cited
US2642825A
Cited
US2762084A
Cited
FR1385350A
Cited
US3404496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |