US2845907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heating fluids
Assignee: John B. Pierce Laboratory
•
Filing: 1955-03-16
•
Granted: 1958-08-05
•
Expires: 1975-03-16
Abstract
No abstract record available.
Inventors
- 👤 Payne Hugh Frederick
- 👤 Bauer Frederick Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:52
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/06; F28D7/08; F28D7/082; F28D7/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1082312A
Cited
US1814423A
Cited
US1890170A
Cited
US2266291A
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US2403017A
Cited
US2578332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |