US2155279A
Expired / Lapsed
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Fluid flow control apparatus
Assignee: General Electric Co
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Filing: 1935-05-22
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Granted: 1939-04-18
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Expires: 1955-05-22
Abstract
No abstract record available.
Inventors
- 👤 Kenton D Mcmahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:51
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/28; H01J19/32; H01J19/36; F; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/76; F24F7/00; F24F7/04; F24F7/06; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0027; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85954
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) | 1942-04-17 | 1942-10-17 | 1943-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-17 | 1946-10-17 | 1947-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-17 | 1950-10-17 | 1951-04-18 | $7700.00 | Window Closed / Lapsed |