US2654139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous strand helical conveying apparatus
Assignee: United States Steel Corp
•
Filing: 1949-03-10
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Granted: 1953-10-06
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Expires: 1969-03-10
Abstract
No abstract record available.
Inventors
- 👤 Edwin T Lorig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:03
CPC Classifications
B; B65; B65G; B65G49/00; B65G49/02; B65G49/04; B65G49/0404; B21; B21C; B21C47/00; B21C47/26; B21C47/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1052125A
Cited
US2115025A
Cited
US2175218A
Cited
US2428704A
Cited
US2512645A
Cited
US2469767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |