US2411986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-gas-phase control
Assignee: Bristol Co
•
Filing: 1942-05-21
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Granted: 1946-12-03
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Expires: 1962-05-21
Abstract
No abstract record available.
Inventors
- 👤 Robert D Cowherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:18
CPC Classifications
D; D21; D21C; D21C7/00; D21C7/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3115; Y10T137/3127; Y10T137/4238; Y10T137/4245; Y10T137/4252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-12-02 | 1950-06-03 | 1950-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-12-02 | 1954-06-03 | 1954-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-12-02 | 1958-06-03 | 1958-12-03 | $7700.00 | Window Closed / Lapsed |