US2652231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumping assembly
Assignee: Individual
•
Filing: 1949-10-03
•
Granted: 1953-09-15
•
Expires: 1969-10-03
Abstract
No abstract record available.
Inventors
- 👤 Roy A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:16
CPC Classifications
E; E21; E21B; E21B17/00; F; F16; F16G; F16G11/00; F16G11/04; F16G11/042; F16G11/08; Y; Y10; Y10T; Y10T403/00; Y10T403/36; Y10T403/364; Y10T403/368; Y10T403/47; Y10T403/473; Y10T403/49; Y10T403/55; Y10T403/556
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US663605A
Cited
US851118A
Cited
US982998A
Cited
US991196A
Cited
US1094668A
Cited
US1293383A
Cited
US1384489A
Cited
US2046348A
Cited
US2346846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |