US2982221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear pump
Assignee: Individual
•
Filing: 1958-07-02
•
Granted: 1961-05-02
•
Expires: 1978-07-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Whitfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:58
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0042; F04C2/00; F04C2/08; F04C2/082; F04C2/084; F04C2/12; F04C2/14; F04C2/16; F04C2/18; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19949; Y10T74/19953
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1698802A
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GB384355A
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US1991541A
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GB464475A
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US2079083A
Cited
FR789211A
Cited
DE672700C
Cited
US2319374A
Cited
US2294805A
Cited
US2381695A
Cited
US2460278A
Cited
US2622787A
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US2922377A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |