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Patent US2672099A successfully refreshed from Google Patents.
US2672099A
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US
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Rotary pumping apparatus
Assignee: Individual
•
Filing: 1950-10-16
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Granted: 1954-03-16
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Expires: 1970-10-16
Abstract
No abstract record available.
Inventors
- 👤 Deubel Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:03
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/02; F01C1/063; F04; F04C; F04C2/00; F04C2/02; F04C2/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US878600A
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US1460988A
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US1690727A
Cited
US1690728A
Cited
US1936467A
Cited
DE666396C
Cited
US2142867A
Cited
US2250726A
Cited
US2401376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |