US2238252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple plunger variable delivery pump
Assignee: ANTHONY WILLIAM DELLCR
•
Filing: 1939-01-17
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Granted: 1941-04-15
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Expires: 1959-01-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:10
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/26; F04B1/28; F04B1/29; F04B1/295; F04B1/128; F04B1/14; F04B1/141; F04B1/143; F04B1/146; F04B49/00; F04B49/18; F04B49/22; F04B49/24; F04B49/243; F04B5/00; F04B53/00; F04B53/16; F04B53/162; F04B53/164; F04B1/04; F04B1/06; F04B1/07
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) | 1944-04-14 | 1944-10-14 | 1945-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-14 | 1948-10-14 | 1949-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-14 | 1952-10-14 | 1953-04-15 | $7700.00 | Window Closed / Lapsed |