US2806484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic safety flow control valve
Assignee: Individual
•
Filing: 1951-12-27
•
Granted: 1957-09-17
•
Expires: 1971-12-27
Abstract
No abstract record available.
Inventors
- 👤 Schultz Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:50
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/20; F16K17/22; F16K17/32; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723; Y10T137/7726; Y10T137/7727; Y10T137/773
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US598935A
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US635828A
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US1093899A
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US1155915A
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US1526512A
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US2198487A
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US2447546A
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US2351035A
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US2515516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |