US2982224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump
Assignee: Worthington Corp
•
Filing: 1958-09-26
•
Granted: 1961-05-02
•
Expires: 1978-09-26
Abstract
No abstract record available.
Inventors
- 👤 John G Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:40
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3446
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US730052A
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US1075300A
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US929018A
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US1287920A
Cited
GB179684A
Cited
CH132994A
Cited
GB341874A
Cited
US2387761A
Cited
US2416987A
Cited
US2684035A
Cited
DE821156C
Cited
US2751849A
Cited
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 |