Patent US2933043A successfully refreshed from Google Patents.
US2933043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well pump
Assignee: Individual
•
Filing: 1955-05-26
•
Granted: 1960-04-19
•
Expires: 1975-05-26
Abstract
No abstract record available.
Inventors
- 👤 Emery C Furrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:51
CPC Classifications
F; F04; F04B; F04B47/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2191369A
Cited
US2291880A
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US2364600A
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US2501380A
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US2497348A
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US2631541A
Cited
US2727467A
Cited
US2679806A
Cited
US2780171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |