Patent US2915978A successfully refreshed from Google Patents.
US2915978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor pump unit
Assignee: Individual
•
Filing: 1956-04-10
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Granted: 1959-12-08
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Expires: 1976-04-10
Abstract
No abstract record available.
Inventors
- 👤 Edward J Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:48
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/66; F04D29/669; F04D13/00; F04D13/02; F04D13/06; F04D29/08; F04D29/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB394629A
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US2114780A
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US2139373A
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US2360211A
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US2514865A
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US2531342A
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US2485408A
Cited
US2624286A
Cited
US2620151A
Cited
US2656097A
Cited
US2762311A
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 |