Patent US2766765A successfully refreshed from Google Patents.
US2766765A
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Method and apparatus for maintaining uniform flow resistance
Assignee: National Cylinder Gas Co
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Filing: 1952-04-30
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Granted: 1956-10-16
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Expires: 1972-04-30
Abstract
No abstract record available.
Inventors
- 👤 John P Bolanowski
- 👤 Miller Bruce De Haven
- 👤 George W Reigel
- 👤 Sutton Mack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:56
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/07; F16K7/075; F16K15/00; F16K15/14; F16K15/1402; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0396; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T137/7845; Y10T137/7854; Y10T137/7856
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |