Patent US3381339A successfully refreshed from Google Patents.
US3381339A
Expired / Lapsed
US
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Hydraulic casting of liquid polymers
Assignee: National Aeronautics and Space Administration
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Filing: 1966-05-12
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Granted: 1968-05-07
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Expires: 1986-05-12
Abstract
No abstract record available.
Inventors
- 👤 Robert B Trelease
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:21
CPC Classifications
B; B29; B29C; B29C39/00; B29C39/22; B29C39/42; B29C31/00; B29C31/04; B29C39/24; B29C45/00; B29C45/17; B29C45/46; Y; Y10; Y10S; Y10S425/00; Y10S425/812
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US761649A
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US806783A
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US816144A
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US2358857A
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US2614056A
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US2624071A
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US2696022A
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US2970343A
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US3044118A
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US3016574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |