Patent US2439190A successfully refreshed from Google Patents.
US2439190A
Expired / Lapsed
US
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Electroplating rack
Assignee: AT&T Inc
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Filing: 1944-07-13
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Granted: 1948-04-06
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Expires: 1964-07-13
Abstract
No abstract record available.
Inventors
- 👤 Leroy E Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:45
CPC Classifications
C; C25; C25D; C25D17/00; C25D17/06; C25D17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190214133A
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US731453A
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US799861A
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US1281983A
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GB288813A
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US1895845A
Cited
FR690318A
Cited
GB362756A
Cited
US2177453A
Cited
US2275382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-06 | 1951-10-06 | 1952-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-06 | 1955-10-06 | 1956-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-06 | 1959-10-06 | 1960-04-06 | $7700.00 | Window Closed / Lapsed |