Patent US2557206A successfully refreshed from Google Patents.
US2557206A
Expired / Lapsed
US
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Sprinkler
Assignee: Scovill Inc
•
Filing: 1946-03-21
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Granted: 1951-06-19
•
Expires: 1966-03-21
Abstract
No abstract record available.
Inventors
- 👤 Donald L Spender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:31
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/003; B05B3/02; B05B3/04; B05B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US871029A
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US1435140A
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US1642910A
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US1677486A
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US1704610A
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US1780332A
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US1976030A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |