Patent US3478876A successfully refreshed from Google Patents.
US3478876A
Expired / Lapsed
US
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Magnetic parts sorter
Assignee: Individual
•
Filing: 1965-01-12
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Granted: 1969-11-18
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Expires: 1985-01-12
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Littwin
- 👤 Donald F Littwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:06
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/12; G01R31/18; B; B07; B07C; B07C5/00; B07C5/34; B07C5/344; B07C5/36; B07C5/363; B07C5/365; G01R33/00; G01R33/12; Y; Y10; Y10S; Y10S209/00; Y10S209/914; Y10S209/92; Y10S209/934
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) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |