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US2962785A
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Apparatus for manufacturing pretensioned, reinforced concrete sections
Assignee: WEST ALLIS CONCRETE PRODUCTS C
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Filing: 1955-08-18
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Granted: 1960-12-06
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Expires: 1975-08-18
Abstract
No abstract record available.
Inventors
- 👤 James M Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:08
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/08; B28B1/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1837529A
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GB357591A
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US2254744A
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US2380435A
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US2458564A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |