US2483452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color sorting device using differently color-selective photocells and a cathode-ray tube
Assignee: Allen B du Mont Laboratories Inc
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Filing: 1946-11-19
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Granted: 1949-10-04
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Expires: 1966-11-19
Abstract
No abstract record available.
Inventors
- 👤 Berkley Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:13
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; G01J3/50; B; B07; B07C; B07C5/00; B07C5/34; B07C5/342; G01J3/02; G01J3/0205; G01J3/0251; G01J3/51; G01J3/513
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) | 1952-10-03 | 1953-04-04 | 1953-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-03 | 1957-04-04 | 1957-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-03 | 1961-04-04 | 1961-10-04 | $7700.00 | Window Closed / Lapsed |