US2573094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric welding system
Assignee: Cutler Hammer Inc
•
Filing: 1946-03-09
•
Granted: 1951-10-30
•
Expires: 1966-03-09
Abstract
No abstract record available.
Inventors
- 👤 Irvin W Cox
- 👤 Jerome B Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:39
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/248
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1928812A
Cited
US1904485A
Cited
US2024173A
Cited
US2340131A
Cited
GB420100A
Cited
GB423166A
Cited
US2066943A
Cited
US2089213A
Cited
US2120565A
Cited
US2255652A
Cited
US2294388A
Cited
US2295293A
Cited
US2362769A
Cited
US2355633A
Cited
US2356765A
Cited
US2439938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |