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US3445536A
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US
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Assignee: Universal Oil Products Co
•
Filing: 1966-12-27
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Granted: 1969-05-20
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Expires: 1986-12-27
Abstract
No abstract record available.
Inventors
- 👤 Richard R De Graff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3101380A
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US3201488A
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US3213151A
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US3362903A
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US3291849A
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US3248317A
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US3322842A
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US3349145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |