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Patent US2916076A successfully refreshed from Google Patents.
US2916076A
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Apparatus for fabricating arch-type culverts
Assignee: Young & Greenwalt Co
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Filing: 1956-12-21
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Granted: 1959-12-08
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Expires: 1976-12-21
Abstract
No abstract record available.
Inventors
- 👤 John L Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:26
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/155; B21D; B21D1/00; B21D1/06; B21D1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US634172A
Cited
US1524106A
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GB610607A
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US2474887A
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US2515786A
Cited
US2576426A
Cited
US2682924A
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US2687763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |