US3535852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature dust collector
Assignee: HYDROMATION ENG CO
•
Filing: 1968-11-27
•
Granted: 1970-10-27
•
Expires: 1988-11-27
Abstract
No abstract record available.
Inventors
- 👤 Gene Hirs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:52
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; B01D39/20; B01D39/2068; B01D39/2082; B01D39/2086; B01D46/00; B01D46/66; B01D46/70; B01D46/72; B01D46/0039; B01D46/0041; B01D46/0043; B01D46/24; B01D46/2403; B01D46/2411; B01D46/56; B01D46/58; B01D2273/00; B01D2273/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1898027A
Cited
US1892210A
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US2402140A
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US2526651A
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US2804168A
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US2747686A
Cited
US2784846A
Cited
US2765047A
Cited
US2892510A
Cited
US3073097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |