US2044372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reboiler and condenser
Assignee: Individual
•
Filing: 1934-10-26
•
Granted: 1936-06-16
•
Expires: 1954-10-26
Abstract
No abstract record available.
Inventors
- 👤 Lee S Twomey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:17
CPC Classifications
F; F25; F25J; F25J5/00; F25J5/002; F25J5/005; F25J3/00; F25J3/02; F25J3/04; F25J3/04406; F25J3/04412; F25J1/00; F25J1/02; F25J1/0243; F25J1/0257; F25J1/0262; F25J1/0264; F25J1/0265; F25J2250/00; F25J2250/02; F25J2290/00; F25J2290/32; Y; Y10; Y10S; Y10S165/00; Y10S165/184; Y10S165/217; Y10S165/223; Y10S62/00; Y10S62/902; Y10S62/903
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) | 1939-06-16 | 1939-12-16 | 1940-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-06-16 | 1943-12-16 | 1944-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-06-16 | 1947-12-16 | 1948-06-16 | $7700.00 | Window Closed / Lapsed |