US2482302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering system
Assignee: Thompson Grinder Co
•
Filing: 1946-04-25
•
Granted: 1949-09-20
•
Expires: 1966-04-25
Abstract
No abstract record available.
Inventors
- 👤 Otto M Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:49
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/10; B23Q11/1069; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D29/27; B01D29/50; B01D29/56; B01D29/88; B01D29/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US681477A
Cited
US985961A
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US1081082A
Cited
US1271925A
Cited
US1462048A
Cited
US1936315A
Cited
US1959623A
Cited
US2044096A
Cited
US2364418A
Cited
US2396927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-19 | 1953-03-21 | 1953-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-19 | 1957-03-21 | 1957-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-19 | 1961-03-21 | 1961-09-20 | $7700.00 | Window Closed / Lapsed |