US2542591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic cutoff valve for tanks
Assignee: Individual
•
Filing: 1946-08-09
•
Granted: 1951-02-20
•
Expires: 1966-08-09
Abstract
No abstract record available.
Inventors
- 👤 Walter B Streety
- 👤 Charles R Guinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:59
CPC Classifications
F; F16; F16L; F16L55/00; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/20; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/7287; Y10T137/7313; Y10T137/7323; Y10T137/7326; Y10T137/7358; Y10T137/7381; Y10T137/7394; Y10T137/7397
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |