US1645802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deep-well pump-plunger attachment
Assignee: Individual
•
Filing: 1925-06-09
•
Granted: 1927-10-18
•
Expires: 1945-06-09
Abstract
No abstract record available.
Inventors
- 👤 Lewis F Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:50
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/14; F04B53/144; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042; E21B17/043; F16; F16B; F16B2200/00; F16B2200/10; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/949; Y10T; Y10T403/00; Y10T403/70; Y10T403/7016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1930-10-17 | 1931-04-18 | 1931-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-10-17 | 1935-04-18 | 1935-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-10-17 | 1939-04-18 | 1939-10-18 | $7700.00 | Window Closed / Lapsed |