US2992654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve member and seat material
Assignee: KROUSE DOREMUS FOUNDRY CO
•
Filing: 1958-06-06
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Granted: 1961-07-18
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Expires: 1978-06-06
Abstract
No abstract record available.
Inventors
- 👤 Doremus R Ellsworth
- 👤 Richard E Doremus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:34
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/04; F16K3/06; F16K3/08; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/612; Y10T137/613; Y10T137/614
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1085688A
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US1133853A
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US2061714A
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US2331001A
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US2768643A
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US2827924A
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US2776104A
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US2815187A
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US2793654A
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US2757541A
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US2901213A
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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) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |