Patent US3027846A successfully refreshed from Google Patents.
US3027846A
Expired / Lapsed
US
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Displacement-type rotary pump
Assignee: Individual
•
Filing: 1959-12-29
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Granted: 1962-04-03
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Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 Schindler Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:14
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/101; F16; F16N; F16N13/00; F16N13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2032886A
Cited
US2246610A
Cited
US2229231A
Cited
US2209856A
Cited
US2481560A
Cited
US2671410A
Cited
US2905094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |