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Patent US2988219A successfully refreshed from Google Patents.
US2988219A
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Means and methods for color sorting articles
Assignee: Big Heart Pet Brands LLC
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Filing: 1953-03-23
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Granted: 1961-06-13
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Expires: 1973-03-23
Abstract
No abstract record available.
Inventors
- 👤 Harold W Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:47
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/34; B07C5/342
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1107438A
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US1943278A
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US1985044A
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US2131095A
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US2114867A
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US2158193A
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US2244826A
Cited
US2625265A
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US2696297A
Cited
US2678725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |