Patent US2574874A successfully refreshed from Google Patents.
US2574874A
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Calibrated two-arm sprinkler
Assignee: Scovill Inc
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Filing: 1950-03-17
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Granted: 1951-11-13
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Expires: 1970-03-17
Abstract
No abstract record available.
Inventors
- 👤 Charles H Koeppel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:25
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/025; B05B3/026; B05B1/00; B05B1/30; B05B1/3033; B05B1/308; B05B3/04; B05B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1685165A
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US1639389A
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US1704610A
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US1911381A
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US2202349A
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US2335332A
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US2431103A
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US2473933A
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US2522928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |