Patent US2139640A successfully refreshed from Google Patents.
US2139640A
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Method for metalizing surfaces
Assignee: Robert Bosch GmbH
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Filing: 1937-03-17
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Granted: 1938-12-06
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Expires: 1957-03-17
Abstract
No abstract record available.
Inventors
- 👤 Mall Eugen
- 👤 Dorn Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:49
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/04; C23C14/042; G; G11; G11B; G11B7/00; G11B7/24; G11B7/26; H; H05; H05K; H05K3/00; H05K3/10; H05K3/14; H05K3/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-12-05 | 1942-06-06 | 1942-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-12-05 | 1946-06-06 | 1946-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-12-05 | 1950-06-06 | 1950-12-06 | $7700.00 | Window Closed / Lapsed |