Patent US3540596A successfully refreshed from Google Patents.
US3540596A
Expired / Lapsed
US
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Filter feed distributor
Assignee: Cities Service Co
•
Filing: 1968-12-26
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Granted: 1970-11-17
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Expires: 1988-12-26
Abstract
No abstract record available.
Inventors
- 👤 Cecil W Bugbee
- 👤 John G Hicks Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:17
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/22; B; B01; B01D; B01D33/00; B01D33/15; B01D33/17; B01D33/19; B01D33/70; B01D33/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |