Patent US3012829A successfully refreshed from Google Patents.
US3012829A
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Assignee: FMC Corp
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Filing: 1958-06-30
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Granted: 1961-12-12
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Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 James A Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:57
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/26; E03C1/266; E03C1/2665; F; F16; F16J; F16J15/00; F16J15/16; F16J15/162; Y; Y10; Y10S; Y10S277/00; Y10S277/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US549419A
Cited
GB523854A
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US2379547A
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US2365046A
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US2459981A
Cited
US2587405A
Cited
US2626840A
Cited
GB719222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |