US2427059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control means
Assignee: Detroit Lubricator Co
•
Filing: 1943-12-03
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Granted: 1947-09-09
•
Expires: 1963-12-03
Abstract
No abstract record available.
Inventors
- 👤 Walter S Landon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:23
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/56; G01F23/60; G01F23/603; F; F23; F23D; F23D5/00; F23D5/12; F23D5/14; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7297; Y10T137/73; Y10T137/7329; Y10T137/7358; Y10T137/7413; Y10T137/8593; Y10T137/86292; Y10T137/86324; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2183815A
Cited
US2199538A
Cited
US2301041A
Cited
US2274145A
Cited
US2338319A
Cited
US2336730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |