US2067417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preheating fluids
Assignee: Individual
•
Filing: 1934-07-26
•
Granted: 1937-01-12
•
Expires: 1954-07-26
Abstract
No abstract record available.
Inventors
- 👤 Webster I Sallee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:27
CPC Classifications
F; F23; F23K; F23K5/00; F23K5/02; F23K5/14; F23K5/20; Y; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/4857; Y10T137/6416; Y10T137/6579; Y10T137/8593; Y10T137/86187; Y10T137/86493; Y10T137/86501
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-01-12 | 1940-07-13 | 1941-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-01-12 | 1944-07-13 | 1945-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-01-12 | 1948-07-13 | 1949-01-12 | $7700.00 | Window Closed / Lapsed |