US2641369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crossfeed mechanism
Assignee: ANTHRACITE EQUIPMENT Corp
•
Filing: 1951-03-02
•
Granted: 1953-06-09
•
Expires: 1971-03-02
Abstract
No abstract record available.
Inventors
- 👤 Paul A Mulcey
- 👤 James W Eckerd
- 👤 Edward I Small
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:54
CPC Classifications
F; F23; F23K; F23K3/00; F23K3/10; F23K3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1525506A
Cited
US2142701A
Cited
US2208757A
Cited
US2255481A
Cited
US2332688A
Cited
US2390680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |