US2982408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color discriminator
Assignee: General Precision Inc
•
Filing: 1955-09-19
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Granted: 1961-05-02
•
Expires: 1975-09-19
Abstract
No abstract record available.
Inventors
- 👤 Wayne E Blackburn
- 👤 William J Wichman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:50
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/34; B07C5/342
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) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |