US3748239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electrolytically marking a metallic article
Assignee: SKF Compagnie dApplications Mecaniques SA
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Filing: 1971-08-19
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Granted: 1973-07-24
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Expires: 1991-08-19
Abstract
Abstract METHOD OF ELECTROLYTICALLY MARKING A METALLIC ARTICLE BY FIRST APPLYING AN ALTERNATING CURRENT BETWEEN AN ELECTRODE AND SAID ARTICLE AND THEN APPLYING A DIRECT CURRENT THEREBETWEEN.
Inventors
- 👤 P Lavalette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:48
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/02; C25F3/14; Y; Y10; Y10S; Y10S204/00; Y10S204/08
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |