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US1062571A
Expired / Lapsed
US
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Process of electric welding.
Assignee: Barnhart Bros & Spindler
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Filing: 1912-04-15
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Granted: 1913-05-20
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Expires: 1932-04-15
Abstract
No abstract record available.
Inventors
- 👤 Charles R Murray
- 👤 Lewis R Brink
- 👤 Walter K Malmstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:09
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/002
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) | 1916-05-19 | 1916-11-18 | 1917-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-05-19 | 1920-11-18 | 1921-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-05-19 | 1924-11-18 | 1925-05-20 | $7700.00 | Window Closed / Lapsed |