Patent US3067987A successfully refreshed from Google Patents.
US3067987A
Expired / Lapsed
US
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Two-component mixer
Assignee: WR Grace and Co
•
Filing: 1959-06-19
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Granted: 1962-12-11
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Expires: 1979-06-19
Abstract
No abstract record available.
Inventors
- 👤 Sidney R Ballou
- 👤 David G Greenlie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:25
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/20; B01F35/22; B01F35/2201; B01F35/2209; B01F35/80; B01F35/83; B01F35/834
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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |