US2443947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyer belt
Assignee: Individual
•
Filing: 1945-12-04
•
Granted: 1948-06-22
•
Expires: 1965-12-04
Abstract
No abstract record available.
Inventors
- 👤 Buford M Brooks
- 👤 Mirshak Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:14
CPC Classifications
B; B65; B65G; B65G17/00; B65G17/06; B65G17/08; B65G17/086; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US556643A
Cited
GB189612100A
Cited
US1507888A
Cited
US1635085A
Cited
US1809748A
Cited
US1748456A
Cited
AU1632334A
Cited
US2073471A
Cited
US2268542A
Cited
US2321702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-22 | 1951-12-22 | 1952-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-22 | 1955-12-22 | 1956-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-22 | 1959-12-22 | 1960-06-22 | $7700.00 | Window Closed / Lapsed |