Patent US2054375A successfully refreshed from Google Patents.
US2054375A
Expired / Lapsed
US
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Welding apparatus
Assignee: Individual
•
Filing: 1929-12-02
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Granted: 1936-09-15
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Expires: 1949-12-02
Abstract
No abstract record available.
Inventors
- 👤 Halle Bobbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:14
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-09-15 | 1940-03-16 | 1940-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-09-15 | 1944-03-16 | 1944-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-09-15 | 1948-03-16 | 1948-09-15 | $7700.00 | Window Closed / Lapsed |