US2887756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form construction
Assignee: Individual
•
Filing: 1956-11-19
•
Granted: 1959-05-26
•
Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Frederick O Brechel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:09
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US900261A
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US953014A
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US1113728A
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US1270043A
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US1942098A
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US1814738A
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FR669776A
Cited
US2167413A
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US2584015A
Cited
US2738563A
Cited
US2611169A
Cited
US2741821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |