US2648809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic device for controlling gas and air mixtures
Assignee: CONNELLY Inc
•
Filing: 1949-06-16
•
Granted: 1953-08-11
•
Expires: 1969-06-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank C Grimm
- 👤 Dwight K Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:41
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/20; F23N5/206; F23N5/02; F23N5/08; F23N5/085; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2509
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1794222A
Cited
US1686751A
Cited
US1983429A
Cited
US2058522A
Cited
US2176471A
Cited
US2349521A
Cited
US2377363A
Cited
US2508441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |