Patent US3393770A successfully refreshed from Google Patents.
US3393770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic recycling oiler
Assignee: C M SORENSEN Co Inc
•
Filing: 1965-01-04
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Granted: 1968-07-23
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Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 Fred R Fertik
- 👤 Marcus Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:17
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/02; F04C29/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1038265A
Cited
US2153349A
Cited
US2675958A
Cited
US2785851A
Cited
US2689080A
Cited
DE1016076B
Cited
US2848967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |