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Patent US2345693A successfully refreshed from Google Patents.
US2345693A
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Fluid pumping or feeding device
Assignee: Individual
•
Filing: 1941-08-16
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Granted: 1944-04-04
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Expires: 1961-08-16
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Wilson
- 👤 Lawrence F Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:57
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/102; F04B53/1035; F04B43/00; F04B43/0009; F04B43/0054; F04B43/0072; F04B43/08; F04B43/10; F04B43/107; F04B49/00; F04B49/12; F04B49/121; Y; Y10; Y10T; Y10T137/00; Y10T137/6198; Y10T137/6253; Y10T137/6307
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) | 1947-04-04 | 1947-10-04 | 1948-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-04-04 | 1951-10-04 | 1952-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-04-04 | 1955-10-04 | 1956-04-04 | $7700.00 | Window Closed / Lapsed |