US2601579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curie point valve
Assignee: Individual
•
Filing: 1948-05-22
•
Granted: 1952-06-24
•
Expires: 1968-05-22
Abstract
No abstract record available.
Inventors
- 👤 Robert A Wittmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:27
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/36; G01K7/38; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6443
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1891926A
Cited
FR770767A
Cited
US2248798A
Cited
US2299155A
Cited
US2291637A
Cited
US2372853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |