US2647980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platen control mechanism for welding machines
Assignee: THOMSON ELECTRIC WELDER Co
•
Filing: 1950-03-30
•
Granted: 1953-08-04
•
Expires: 1970-03-30
Abstract
No abstract record available.
Inventors
- 👤 Charles D Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:46
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB280659A
Cited
GB283630A
Cited
US1848271A
Cited
US1957759A
Cited
US1892208A
Cited
US2359324A
Cited
US2492200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |