US2900029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry pipe clapper valves for automatic sprinkler systems
Assignee: RAISLER Corp
•
Filing: 1957-06-17
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Granted: 1959-08-18
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Expires: 1977-06-17
Abstract
No abstract record available.
Inventors
- 👤 Herkimer Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:05
CPC Classifications
A; A62; A62C; A62C35/00; A62C35/58; A62C35/64; A62C35/62; F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7734
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US982719A
Cited
US1144849A
Cited
US1505192A
Cited
GB212460A
Cited
US1599653A
Cited
US1911107A
Cited
US2032257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |