US3486307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air pollution elimination apparatus
Assignee: LYLE C MCDERMOTT
•
Filing: 1968-01-10
•
Granted: 1969-12-30
•
Expires: 1988-01-10
Abstract
No abstract record available.
Inventors
- 👤 Lyle C Mcdermott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:46
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/02; B01D47/021; Y; Y10; Y10S; Y10S261/00; Y10S261/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US652773A
Cited
US999114A
Cited
US1388812A
Cited
US1725925A
Cited
US1866443A
Cited
US2234385A
Cited
US3113168A
Cited
US2947112A
Cited
US3266224A
Cited
US3349839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |