US2979177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake system for a roller type conveyor
Assignee: Alvey Ferguson Co
•
Filing: 1957-10-07
•
Granted: 1961-04-11
•
Expires: 1977-10-07
Abstract
No abstract record available.
Inventors
- 👤 Norman M Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:16
CPC Classifications
B; B65; B65G; B65G13/00; B65G13/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US742722A
Cited
US1792895A
Cited
US1900149A
Cited
US2193481A
Cited
US2292821A
Cited
US2292753A
Cited
US2668714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |