US2449185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety control system for fuel burners
Assignee: Robertshaw Controls Co
•
Filing: 1944-06-05
•
Granted: 1948-09-14
•
Expires: 1964-06-05
Abstract
No abstract record available.
Inventors
- 👤 Max S Unger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:16
CPC Classifications
F; F23; F23Q; F23Q9/00; F23Q9/08; F23Q9/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US294669A
Cited
US1088878A
Cited
US946487A
Cited
US1248942A
Cited
US1330507A
Cited
US1855551A
Cited
US1978737A
Cited
US2119503A
Cited
US2194634A
Cited
US2266185A
Cited
US2237578A
Cited
US2290047A
Cited
US2211701A
Cited
US2265294A
Cited
US2292478A
Cited
US2351277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-14 | 1952-03-15 | 1952-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-14 | 1956-03-15 | 1956-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-14 | 1960-03-15 | 1960-09-14 | $7700.00 | Window Closed / Lapsed |