US3568415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire control for filterhouse
Assignee: Alstom Power Inc
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Filing: 1969-04-25
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Granted: 1971-03-09
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Expires: 1989-04-25
Abstract
Abstract A FIRE CONTROL SYSTEM FOR A BAG FILTERHOUSE WHICH AUTOMATICALLY PROJECTS A FIRE EXTINGUISHING SUBSTANCE ONTO A FIRE BURNING WITHIN THE FILTERHOUSE. THE FIRE CONTROL SYSTEM IS UNIQUELY ADAPTED TO UTILIZE AN EXISTING AIR JET SYSTEM OF BAG CLEANING THEREBY MAKING AVAILABLE AN EFFECTIVE FIRE CONTROL SYSTEM AT VERY MINOR ADDITIONAL EXPENSE OF SPACE AND MATERIALS.
Inventors
- 👤 David J Wyrough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:44
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/0084; B01D46/0091; B01D46/0093; B01D46/42; B01D46/44; B01D46/448; B01D46/66; B01D46/70; B01D46/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |