US2805580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double stroke pumping attachment for a well pumping apparatus
Assignee: Individual
•
Filing: 1953-01-15
•
Granted: 1957-09-10
•
Expires: 1973-01-15
Abstract
No abstract record available.
Inventors
- 👤 Kane David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:28
CPC Classifications
F; F04; F04B; F04B47/00; F04B47/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18176; Y10T74/18182; Y10T74/18888; Y10T74/1892; Y10T74/18968; Y10T74/20; Y10T74/20558; Y10T74/20564
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1271973A
Cited
US1495539A
Cited
US1516783A
Cited
US1515099A
Cited
US1609250A
Cited
US2142552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |