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US2643303A
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Electrical contactor roll for electroplating machines
Assignee: AT&T Inc
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Filing: 1949-08-24
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Granted: 1953-06-23
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Expires: 1969-08-24
Abstract
No abstract record available.
Inventors
- 👤 Alexander C Frankwich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:06
CPC Classifications
C; C25; C25D; C25D7/00; C25D7/06; C25D7/0614; C25D7/0657
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US652893A
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US1058047A
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US1110248A
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US1447011A
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US1962670A
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US2074580A
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US2446548A
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US2424173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |