Patent US2956188A successfully refreshed from Google Patents.
US2956188A
Expired / Lapsed
US
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Sealless motor for valve operation
Assignee: FOSTORIA CORP
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Filing: 1956-04-06
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Granted: 1960-10-11
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Expires: 1976-04-06
Abstract
No abstract record available.
Inventors
- 👤 Howard T White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:25
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/06; F; F16; F16K; F16K31/00; F16K31/02; F16K31/04; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18664
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2351211A
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US2377937A
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US2568548A
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US2444886A
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US2654848A
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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) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |