US2479876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumping apparatus
Assignee: STEEL PRODUCTS ENGINEERING Co
•
Filing: 1946-04-12
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Granted: 1949-08-23
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Expires: 1966-04-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas L Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:53
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/14; F04B1/16; F04B1/122; F04B1/124; F04B1/126; F04B1/141; F04B1/143; F04B1/18; F04B1/184; F04B53/00; F04B53/10; F04B53/1037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |