US2827855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump drive mechanism
Assignee: FMC Corp
•
Filing: 1953-05-18
•
Granted: 1958-03-25
•
Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Dan R Rankin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:41
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE497568A
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DE157495C
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US1728685A
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US1841604A
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US1856610A
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US1772778A
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US2120914A
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US2363419A
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DE838400C
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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) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |