Patent US3368753A successfully refreshed from Google Patents.
US3368753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measurement and control of burner excess air
Assignee: Babcock and Wilcox Co
•
Filing: 1965-08-16
•
Granted: 1968-02-13
•
Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 Frank A Baumgartel
- 👤 William T Hage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:35
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; F23D; F23D14/00; F23D14/46; F23D14/60; F23N1/00; F23N1/02; F23N1/025; F23N1/08; F23N1/10; F23N1/105; F23N2229/00; F23N2229/14; F23N2235/00; F23N2235/02; F23N2235/06; F23N2241/00; F23N2241/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2306073A
Cited
US2382220A
Cited
US2407838A
Cited
US3011058A
Cited
US3193199A
Cited
US3101618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |