US2614499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw pump
Assignee: Individual
•
Filing: 1947-05-29
•
Granted: 1952-10-21
•
Expires: 1967-05-29
Abstract
No abstract record available.
Inventors
- 👤 Mullins Gerald Lavern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:05
CPC Classifications
B; B60; B60K; B60K17/00; B60K17/04; B60K17/10; F; F04; F04D; F04D15/00; F04D15/0055; F16; F16H; F16H48/00; F16H48/12; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304566A
Cited
GB191308975A
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US1233610A
Cited
US1436661A
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US1711254A
Cited
US1803858A
Cited
US2010555A
Cited
US1870928A
Cited
US1998152A
Cited
US2407630A
Cited
US2417224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |