US2615398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable stroke pump
Assignee: Individual
•
Filing: 1948-06-18
•
Granted: 1952-10-28
•
Expires: 1968-06-18
Abstract
No abstract record available.
Inventors
- 👤 Howard Giles Philip Eliot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:15
CPC Classifications
B; B01; B01J; B01J4/00; B01J4/008; Y; Y10; Y10T; Y10T74/00; Y10T74/16; Y10T74/1625; Y10T74/165; Y10T74/18; Y10T74/18056; Y10T74/18176; Y10T74/18182; Y10T74/18208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US273276A
Cited
US1171787A
Cited
US1292457A
Cited
US1937803A
Cited
US2147989A
Cited
GB498078A
Cited
US2259713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |