US2956375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-cast concrete beam construction
Assignee: Flexicore Co Inc
•
Filing: 1957-08-06
•
Granted: 1960-10-18
•
Expires: 1977-08-06
Abstract
No abstract record available.
Inventors
- 👤 John B Henry
- 👤 Gayle B Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:39
CPC Classifications
E; E04; E04B; E04B5/00; E04B5/02; E04B5/04; E04B5/043; E04B5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1049702A
Cited
US1241187A
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US1579015A
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US1778315A
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US1850735A
Cited
US1921285A
Cited
US2103969A
Cited
US2234114A
Cited
US2299070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |