Patent US3449255A successfully refreshed from Google Patents.
US3449255A
Expired / Lapsed
US
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Method for decreasing friction in mopping
Assignee: Dow Chemical Co
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Filing: 1966-02-18
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Granted: 1969-06-10
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Expires: 1986-02-18
Abstract
No abstract record available.
Inventors
- 👤 Nelson G Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:00
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3769; C11D3/3773; C11D9/00; C11D9/04; C11D9/22; C11D9/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3275561A
Cited
US3072536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |