US2737566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of butt-welding preheated metallic work pieces
Assignee: Theodor Wuppermann GmbH
•
Filing: 1951-12-27
•
Granted: 1956-03-06
•
Expires: 1971-12-27
Abstract
No abstract record available.
Inventors
- 👤 Wuppermann August Theodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:53
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US423733A
Cited
US428459A
Cited
US1916013A
Cited
GB371165A
Cited
US2085583A
Cited
US1978891A
Cited
US1976342A
Cited
US2184534A
Cited
US2176103A
Cited
US2235385A
Cited
US2415987A
Cited
US2365958A
Cited
US2459795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |