US2472008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deluge valve
Assignee: Rockwood Sprinkler Co
•
Filing: 1945-03-24
•
Granted: 1949-05-31
•
Expires: 1965-03-24
Abstract
No abstract record available.
Inventors
- 👤 Howard G Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:21
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/20; F16K1/2007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US756572A
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US746393A
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US761701A
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US900886A
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US871021A
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US1614002A
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US1801569A
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US1942823A
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US2342589A
Cited
US2366520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |