Patent US3480141A successfully refreshed from Google Patents.
US3480141A
Expired / Lapsed
US
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Photoelectric system for grading objects according to length and width
Assignee: Individual
•
Filing: 1967-08-30
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Granted: 1969-11-25
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Expires: 1987-08-30
Abstract
No abstract record available.
Inventors
- 👤 Frank C Rock Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:37
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/04; B07C5/10
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |