Patent US3011956A successfully refreshed from Google Patents.
US3011956A
Expired / Lapsed
US
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Automatic drycleaning still
Assignee: Detrex Corp
•
Filing: 1960-03-15
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Granted: 1961-12-05
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Expires: 1980-03-15
Abstract
No abstract record available.
Inventors
- 👤 Jack C Smith
- 👤 Edwin E Etterman
- 👤 Roy T Romine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:14
CPC Classifications
B; B01; B01D; B01D3/00; D; D06; D06F; D06F43/00; D06F43/08; D06F43/081; Y; Y10; Y10S; Y10S159/00; Y10S159/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US651826A
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US2090915A
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US2218698A
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US2223595A
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US2318455A
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US2593640A
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US2538200A
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US2771892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |