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US2862601A
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Electromagnetic transfer apparatus
Assignee: LOUIS W BIER
•
Filing: 1956-03-07
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Granted: 1958-12-02
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Expires: 1976-03-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur K Littwin
- 👤 Donald F Littwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:38
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/74; B65G47/90; B65G47/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190704849A
Cited
US1297236A
Cited
US1814891A
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US1983471A
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US2365691A
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US2644563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |