Patent US2638111A successfully refreshed from Google Patents.
US2638111A
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Float valve
Assignee: Gulf Oil Corp
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Filing: 1952-05-26
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Granted: 1953-05-12
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Expires: 1972-05-26
Abstract
No abstract record available.
Inventors
- 👤 Wagner Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:24
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/76; B67D7/763; F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/20; F16K31/22; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3009; Y10T137/3012; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3068; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/3102; Y10T137/7287; Y10T137/7358; Y10T137/7423; Y10T137/7426
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) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |