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Patent US3374983A successfully refreshed from Google Patents.
US3374983A
Expired / Lapsed
US
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Concrete form stripping valve
Assignee: MOLDED GLASS CO
•
Filing: 1965-08-09
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Granted: 1968-03-26
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Expires: 1985-08-09
Abstract
No abstract record available.
Inventors
- 👤 Eldridge R Garretson
- 👤 William S Spurr
- 👤 Chester L Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:35
CPC Classifications
B; B22; B22C; B22C17/00; B28; B28B; B28B7/00; B28B7/10; B28B7/12; Y; Y10; Y10S; Y10S425/00; Y10S425/812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1522780A
Cited
US1983757A
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US2148084A
Cited
US2886876A
Cited
US2850785A
Cited
US3151374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |