Patent US1384439A successfully refreshed from Google Patents.
US1384439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode-holder for arc-welding
Assignee: Westinghouse Electric Corp
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Filing: 1919-11-24
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Granted: 1921-07-12
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Expires: 1939-11-24
Abstract
No abstract record available.
Inventors
- 👤 Otto H Eschholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:12
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/282
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) | 1924-07-11 | 1925-01-10 | 1925-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-07-11 | 1929-01-10 | 1929-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-07-11 | 1933-01-10 | 1933-07-12 | $7700.00 | Window Closed / Lapsed |