Patent US2558970A successfully refreshed from Google Patents.
US2558970A
Expired / Lapsed
US
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Seal for rotary fuel pumps
Assignee: Niles Bement Pond Co
•
Filing: 1945-02-10
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Granted: 1951-07-03
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Expires: 1965-02-10
Abstract
No abstract record available.
Inventors
- 👤 Donald E Lipfert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:29
CPC Classifications
F; F02; F02M; F02M59/00; F02M2700/00; F02M2700/13; F02M2700/1317
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL26440C
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GB206806A
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GB274040A
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US2010930A
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US2077881A
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US2260809A
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US2191232A
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US2209856A
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US2348679A
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US2334548A
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US2367781A
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US2439241A
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US2379868A
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US2382960A
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US2434589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |