US2652927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter medium for rotary drum filters
Assignee: Individual
•
Filing: 1948-06-11
•
Granted: 1953-09-22
•
Expires: 1968-06-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Komline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:41
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/044; B01D33/048; B01D33/06; B01D33/067; B01D33/073; B01D33/09; B01D33/27; B01D33/275; B01D33/44; B01D33/46; B01D33/468; B01D33/70; B01D33/72; B01D2201/00; B01D2201/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US484276A
Cited
US1264193A
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US1371513A
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US1876123A
Cited
US2031165A
Cited
US2095303A
Cited
US2247460A
Cited
US2198912A
Cited
US2217833A
Cited
US2426886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |