US2684573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for regulating gaseous fluid flow to combustion apparatus
Assignee: Babcock and Wilcox Co
•
Filing: 1950-12-09
•
Granted: 1954-07-27
•
Expires: 1970-12-09
Abstract
No abstract record available.
Inventors
- 👤 Walter G Marskell
- 👤 John M Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:35
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/26
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) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |