US2602298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equalizing valve for plural motor systems
Assignee: Electrol Inc
•
Filing: 1949-09-01
•
Granted: 1952-07-08
•
Expires: 1969-09-01
Abstract
No abstract record available.
Inventors
- 👤 Benjamin N Ashton
- 👤 Eugene V Barkow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:47
CPC Classifications
B; B66; B66F; B66F7/00; B66F7/10; B66F7/16; B66F7/20; F; F15; F15B; F15B11/00; F15B11/16; F15B11/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US955852A
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US1962924A
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US2438389A
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US2350795A
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US2359961A
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US2376320A
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US2328849A
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US2380973A
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US2472944A
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US2484908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |