US2790533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet inspection apparatus
Assignee: United States Steel Corp
•
Filing: 1951-02-16
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Granted: 1957-04-30
•
Expires: 1971-02-16
Abstract
No abstract record available.
Inventors
- 👤 Rollin D Osgood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:11
CPC Classifications
B; B65; B65G; B65G57/00; B65G57/02; B65G57/08; C; C23; C23C; C23C2/00; C23C2/50; C23C2/52; C23C2/526
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US912764A
Cited
US1258115A
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US1434504A
Cited
US1934783A
Cited
US2029456A
Cited
US1943530A
Cited
US2000292A
Cited
US1970749A
Cited
US2501224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |