US2647981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical butt seam welding or cutting process and apparatus for carrying out said process
Assignee: Individual
•
Filing: 1948-11-09
•
Granted: 1953-08-04
•
Expires: 1968-11-09
Abstract
No abstract record available.
Inventors
- 👤 Wogerbauer Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:50
CPC Classifications
B; B23; B23K; B23K13/00; B23K13/01; B23K13/02; B21; B21C; B21C37/00; B21C37/06; B21C37/08; B21C37/0803; B23K11/00; B23K11/08; B23K11/087; B23K11/0873; B23K11/14; B23K13/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1365198A
Cited
US1623249A
Cited
GB377655A
Cited
US1915082A
Cited
US2009685A
Cited
US2179802A
Cited
US2205425A
Cited
US2237309A
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 |