Patent US3511968A successfully refreshed from Google Patents.
US3511968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated arc welding electrode for minimizing both porosity and variation in composition of the weld metal at the start of welding
Assignee: Mckay Co
•
Filing: 1968-10-03
•
Granted: 1970-05-12
•
Expires: 1988-10-03
Abstract
No abstract record available.
Inventors
- 👤 David F Helm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:47
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0255; B23K35/0261; G; G07; G07C; G07C5/00; G07C5/08; G07C5/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3231332A
Cited
US3370152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |