Patent US2408673A successfully refreshed from Google Patents.
US2408673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burner system
Assignee: Metals and Controls Corp
•
Filing: 1944-09-29
•
Granted: 1946-10-01
•
Expires: 1964-09-29
Abstract
No abstract record available.
Inventors
- 👤 John O Moorhead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:19
CPC Classifications
F; F23; F23Q; F23Q7/00; F23Q7/06; F23Q7/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-09-30 | 1950-04-01 | 1950-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-09-30 | 1954-04-01 | 1954-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-09-30 | 1958-04-01 | 1958-10-01 | $7700.00 | Window Closed / Lapsed |