Patent US2604948A successfully refreshed from Google Patents.
US2604948A
Expired / Lapsed
US
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Fire fighting apparatus
Assignee: Rockwood Sprinkler Co
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Filing: 1949-09-15
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Granted: 1952-07-29
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Expires: 1969-09-15
Abstract
No abstract record available.
Inventors
- 👤 Howard G Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:55
CPC Classifications
A; A62; A62C; A62C3/00; A62C3/02; A62C3/0207; B; B01; B01F; B01F25/00; B01F25/30; B01F25/31; B01F25/311; B01F25/3111; B05; B05B; B05B7/00; B05B7/0018; B05B7/005; B05B7/0056; B05B7/0062; Y; Y10; Y10S; Y10S261/00; Y10S261/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2130745A
Cited
US2089646A
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US2043714A
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US2337321A
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US2364848A
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US2492037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |