Patent US1332629A successfully refreshed from Google Patents.
US3482928A
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US
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Method for dry cleaning
Assignee: Dow Chemical Co
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Filing: 1967-11-02
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Granted: 1969-12-09
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Expires: 1987-11-02
Abstract
No abstract record available.
Inventors
- 👤 Herman Knieriem Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:49
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/02; C11D1/34; C11D1/345; C11D1/66; C11D1/72; C11D3/00; C11D3/43; D; D06; D06L; D06L1/00; D06L1/02; D06L1/04
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) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |