Patent US2423398A successfully refreshed from Google Patents.
US2423398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic device for controlling for cooling purposes, the flow of fluids
Assignee: Individual
•
Filing: 1943-03-29
•
Granted: 1947-07-01
•
Expires: 1963-03-29
Abstract
No abstract record available.
Inventors
- 👤 Forrest William Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:55
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/14; F01P7/16; F01M; F01M5/00; F01M5/005; F01M5/007; G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1306; G05D23/132; G05D23/1333; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86879
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1000435A
Cited
US1434542A
Cited
US1635083A
Cited
US1611650A
Cited
DE662977C
Cited
US2136235A
Cited
CH209415A
Cited
GB547350A
Cited
US2374593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-30 | 1950-12-30 | 1951-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-30 | 1954-12-30 | 1955-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-30 | 1958-12-30 | 1959-07-01 | $7700.00 | Window Closed / Lapsed |