Patent NL6406751A successfully refreshed from Google Patents.
Patent US2933411A successfully refreshed from Google Patents.
US2933411A
Expired / Lapsed
US
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Method of dry cleaning and rendering fabrics water repellent
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1953-06-18
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Granted: 1960-04-19
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Expires: 1973-06-18
Abstract
No abstract record available.
Inventors
- 👤 Leo J Novak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:32
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2587623A
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US2756160A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |