US2461328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlling means and system
Assignee: Detroit Lubricator Co
•
Filing: 1943-12-30
•
Granted: 1949-02-08
•
Expires: 1963-12-30
Abstract
No abstract record available.
Inventors
- 👤 Walter S Landon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:22
CPC Classifications
F; F23; F23D; F23D5/00; F23D5/12; F23D5/14; F23N; F23N5/00; F23N5/20; F23N2225/00; F23N2225/08; F23N2225/12; F23N5/02; F23N5/06; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86911; Y10T137/87265; Y10T137/8741; Y10T137/87491; Y10T137/87499; Y10T137/87507
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-08 | 1952-08-09 | 1953-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-08 | 1956-08-09 | 1957-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-08 | 1960-08-09 | 1961-02-08 | $7700.00 | Window Closed / Lapsed |