Patent US2754776A successfully refreshed from Google Patents.
US2754776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof construction
Assignee: Individual
•
Filing: 1951-07-11
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Granted: 1956-07-17
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Expires: 1971-07-11
Abstract
No abstract record available.
Inventors
- 👤 John F Blaski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:16
CPC Classifications
E; E04; E04D; E04D11/00; E04D11/02; E04B; E04B7/00; E04D13/00; E04D13/16; E04D13/1606; E04D13/1643
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US928092A
Cited
US1949543A
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US2211384A
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US2363296A
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US2412404A
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US2478060A
Cited
GB610877A
Cited
US2590687A
Cited
US2680250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |