Patent US3066656A successfully refreshed from Google Patents.
US3066656A
Expired / Lapsed
US
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Fluid heater
Assignee: Universal Oil Products Co
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Filing: 1960-05-03
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Granted: 1962-12-04
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Expires: 1980-05-03
Abstract
No abstract record available.
Inventors
- 👤 Walter C Hensel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:06
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/22; F24H1/40; C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20; F22; F22B; F22B21/00; F22B21/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA596819A
Cited
US2105821A
Cited
US2211903A
Cited
US2638879A
Cited
FR1126248A
Cited
FR1120686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |