Patent US3401505A successfully refreshed from Google Patents.
US3401505A
Expired / Lapsed
US
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Baghouse apparatus
Assignee: MENARDI AND CO
•
Filing: 1965-10-23
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Granted: 1968-09-17
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Wade E Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:05
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/06; B01D46/42; B01D46/4227; B01D46/66; B01D46/70; B01D2273/00; B01D2273/20
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |