Patent US3572264A successfully refreshed from Google Patents.
US3572264A
Expired / Lapsed
US
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Method and apparatus for removing smog and smoke
Assignee: Individual
•
Filing: 1969-09-11
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Granted: 1971-03-23
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Expires: 1989-09-11
Abstract
Abstract AN IMPROVED METHOD AND APPARATUS FOR RECEIVING THE EFFLUENT OR SMOKE DISCHARGE FROM A SMOKE STACK OR INCINERATOR AND REMOVING VISIBLE SMOKE AND SUSPENDED PARTICLES BY WASHING AND FILTERING THE PRODUCTS OF BURNING INCLUDING A METHOD OF RE-CIRCULATING THE BURNED GASES FROM THE CLEANING PROCESS INTO THE CONBUSTION CHAMBER.
Inventors
- 👤 Joe F Mercer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:15
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/04; Y; Y10; Y10S; Y10S261/00; Y10S261/09
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |