Patent US3406502A successfully refreshed from Google Patents.
US3406502A
Expired / Lapsed
US
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Baghouse apparatus
Assignee: MENARDI AND CO
•
Filing: 1967-05-02
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Granted: 1968-10-22
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Expires: 1987-05-02
Abstract
No abstract record available.
Inventors
- 👤 Wiik Einar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:11
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/66; B01D46/70; B01D2265/00; B01D2265/04; B01D2265/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1163318A
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US2357943A
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US720084A
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US1833904A
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US2079315A
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US2129105A
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DE704629C
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US2935158A
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US3243940A
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US3333403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |