US2585970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for heating fluids
Assignee: United States Department of Agriculture
•
Filing: 1949-06-10
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Granted: 1952-02-19
•
Expires: 1969-06-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:20
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/80; H05B6/802; Y; Y10; Y10S; Y10S159/00; Y10S159/26
Claims Analysis
Total Claims: 0
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US2545106A
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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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |