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US2969842A
Expired / Lapsed
US
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Accelerator for dry pipe sprinkler systems
Assignee: Automatic Sprinkler Corp
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Filing: 1958-12-09
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Granted: 1961-01-31
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Expires: 1978-12-09
Abstract
No abstract record available.
Inventors
- 👤 Wayne E Ault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:27
CPC Classifications
A; A62; A62C; A62C35/00; A62C35/58; A62C35/64; A62C35/66; A62C35/60; A62C35/605
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |