US1241899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding-electrode and process of welding.
Assignee: QUASI-ARC Co
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Filing: 1915-03-10
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Granted: 1917-10-02
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Expires: 1935-03-10
Abstract
No abstract record available.
Inventors
- 👤 Percy A E Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:24
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/368
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) | 1920-10-01 | 1921-04-02 | 1921-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-10-01 | 1925-04-02 | 1925-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-10-01 | 1929-04-02 | 1929-10-02 | $7700.00 | Window Closed / Lapsed |