US2997093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumps
Assignee: Keelavite Co Ltd
•
Filing: 1958-12-29
•
Granted: 1961-08-22
•
Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Harris John Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:24
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1702047A
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US2005206A
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US1930745A
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US1970626A
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US1958509A
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US2037434A
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US2375763A
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US2299492A
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US2543480A
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US2479702A
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GB700052A
Cited
US2893465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |