Patent US3042769A successfully refreshed from Google Patents.
US3042769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid fuel flow control system for forced draft heating units
Assignee: NORMAN PRODUCTS Co
•
Filing: 1960-10-13
•
Granted: 1962-07-03
•
Expires: 1980-10-13
Abstract
No abstract record available.
Inventors
- 👤 Ned G Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:25
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/14; F23N5/146; F23N1/00; F23N1/06; F23N1/065; F23N5/18; F23N5/188; F23N2225/00; F23N2225/02; F23N2233/00; F23N2233/02; F23N2235/00; F23N2235/12; F23N2235/20; F23N2235/22; F23N2235/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1914949A
Cited
US2468768A
Cited
US2704571A
Cited
US2231158A
Cited
US2335471A
Cited
US2359168A
Cited
US2537474A
Cited
US2598556A
Cited
US2971530A
Cited
US2922002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |