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US2859876A
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Assignee: INDIANA COMMERCIAL FILTERS COR
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Filing: 1955-09-13
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Granted: 1958-11-11
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Expires: 1975-09-13
Abstract
No abstract record available.
Inventors
- 👤 Alan D Brundage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:46
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/08; B01D39/083; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/50; B01D29/52; B01D29/88; B01D29/92; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0446; B01D2239/00; B01D2239/06; B01D2239/065; B01D2239/0654
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |