Patent US2863986A successfully refreshed from Google Patents.
US2863986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Repulsion magnetic force resistance welders
Assignee: Prec Welder & Machine Co
•
Filing: 1957-10-04
•
Granted: 1958-12-09
•
Expires: 1977-10-04
Abstract
No abstract record available.
Inventors
- 👤 Lawrence W Mecklenborg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:35
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/30; B23K11/31
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) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |