US3055347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for heating organic liquids
Assignee: John B. Pierce Laboratory
•
Filing: 1957-03-27
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Granted: 1962-09-25
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Expires: 1977-03-27
Abstract
No abstract record available.
Inventors
- 👤 George B Bailey
- 👤 George M Rapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:48
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/16; F22B1/167; F24; F24H; F24H1/00
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |