US2679209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumping apparatus
Assignee: Individual
•
Filing: 1949-09-01
•
Granted: 1954-05-25
•
Expires: 1969-09-01
Abstract
No abstract record available.
Inventors
- 👤 Fischer Paul
- 👤 Schoen Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:53
CPC Classifications
F; F04; F04B; F04B53/00; F01; F01B; F01B27/00; F01B27/02; F01L; F01L15/00; F01L15/08; F01L25/00; F01L25/02; F01L25/04; F01L25/06; F01L25/063; F04B43/00; F04B43/02; F04B43/06; F04B43/073; F04B43/0736; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/86606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US424686A
Cited
US491116A
Cited
US541608A
Cited
US1119640A
Cited
US1764366A
Cited
US1885457A
Cited
US1914600A
Cited
US2260306A
Cited
US2453812A
Cited
US2500450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |