US2622720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller conveyer
Assignee: United States Steel Corp
•
Filing: 1950-09-07
•
Granted: 1952-12-23
•
Expires: 1970-09-07
Abstract
No abstract record available.
Inventors
- 👤 Edwin T Lorig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:37
CPC Classifications
B; B65; B65G; B65G13/00; B65G13/08; B65G13/02; B65G13/06; B65G13/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US445290A
Cited
US1437784A
Cited
US866337A
Cited
US872856A
Cited
US1846665A
Cited
US1795137A
Cited
US1756653A
Cited
US2262325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |