US2797251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for holding and moving forward electrodes
Assignee: Knapsack AG
•
Filing: 1955-06-01
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Granted: 1957-06-25
•
Expires: 1975-06-01
Abstract
No abstract record available.
Inventors
- 👤 Damgen Wilhelm
- 👤 Rumberg Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:16
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/10; H05B7/107; Y; Y10; Y10T; Y10T279/00; Y10T279/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1972849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |