US2850038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control device
Assignee: Houdry Process Corp
•
Filing: 1952-09-30
•
Granted: 1958-09-02
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Expires: 1972-09-30
Abstract
No abstract record available.
Inventors
- 👤 Hubert A Shabaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:53
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; G05D7/0113; F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/365; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7796
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US569781A
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US1784609A
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US2227537A
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US2360873A
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US2587188A
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US2511733A
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US2506152A
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US2590215A
Cited
US2582917A
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US2796886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |