US2264740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melting and holding furnace
Assignee: Individual
•
Filing: 1934-09-15
•
Granted: 1941-12-02
•
Expires: 1954-09-15
Abstract
No abstract record available.
Inventors
- 👤 John W Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:17
CPC Classifications
F; F27; F27B; F27B3/00; F27B3/10; F27B3/18; C; C22; C22B; C22B9/00; C22B9/16; F27B3/04; F27B3/045; F27B3/06; F27B3/065; F27D; F27D13/00; F27D17/00; F27D17/30; F27D3/00; F27D2003/0034; F27D2003/0054; F27D2003/0055; F27D2003/0056; F27D3/12; F27D2003/124; F27D3/15; F27D3/1509; Y; Y10; Y10S; Y10S266/00; Y10S266/90
Claims Analysis
Total Claims: 0
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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) | 1944-12-01 | 1945-06-02 | 1945-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-01 | 1949-06-02 | 1949-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-01 | 1953-06-02 | 1953-12-02 | $7700.00 | Window Closed / Lapsed |