US2933095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve construction
Assignee: Houdaille Industries Inc
•
Filing: 1957-04-15
•
Granted: 1960-04-19
•
Expires: 1977-04-15
Abstract
No abstract record available.
Inventors
- 👤 Rumsey Rollin Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:56
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; F16K15/042; B; B64; B64D; B64D37/00; B64D37/005; B64D37/02; B64D37/14; B64D37/20; B64D37/22; Y; Y02; Y02T; Y02T50/00; Y02T50/40; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T137/7912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US755922A
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US1026104A
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US1943805A
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US2015055A
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US2086969A
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US2332007A
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US2324464A
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US2409220A
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US2389168A
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US2616512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |