US2747721A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power driven conveying mechanism
Assignee: LONG Co
•
Filing: 1950-12-11
•
Granted: 1956-05-29
•
Expires: 1970-12-11
Abstract
No abstract record available.
Inventors
- 👤 John B Long
- 👤 Richard J Frye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:18
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/12; E21D9/126; E21D9/128; B; B65; B65G; B65G37/00; B65G2812/00; B65G2812/01; B65G2812/012; B65G2812/014; B65G2812/015
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1476068A
Cited
US1997590A
Cited
US1997591A
Cited
US1932897A
Cited
GB482566A
Cited
US2201334A
Cited
US2358236A
Cited
US2479823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |