US2931890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode feeding device for arc welding apparatus
Assignee: Individual
•
Filing: 1957-01-17
•
Granted: 1960-04-05
•
Expires: 1977-01-17
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/133; B23K9/1336
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |