US2576233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous strand helical conveying apparatus
Assignee: United States Steel Corp
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Filing: 1949-04-08
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Granted: 1951-11-27
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Expires: 1969-04-08
Abstract
No abstract record available.
Inventors
- 👤 Edwin T Lorig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:07
CPC Classifications
B; B05; B05C; B05C3/00; B05C3/02; B05C3/12; B21; B21C; B21C47/00; B21C47/26; B65; B65H; B65H51/00; B65H51/02; B65H51/04; B65H51/08; B65H51/12; B65H2701/00; B65H2701/30; B65H2701/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |