US2776786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow controller
Assignee: Phillips Petroleum Co
•
Filing: 1955-06-17
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Granted: 1957-01-08
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Expires: 1975-06-17
Abstract
No abstract record available.
Inventors
- 👤 Howard J Pankratz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:18
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/0013; B01J8/00; B01J8/08; B01J8/082; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00076; B01J2219/00081; B01J2219/00164
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2486200A
Cited
US2661869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |