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US1751077A
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US
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Automatic welding
Assignee: Heintz Manufacturing Co
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Filing: 1927-12-30
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Granted: 1930-03-18
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Expires: 1947-12-30
Abstract
No abstract record available.
Inventors
- 👤 Ardenne Walter H D
- 👤 Landis J Olin
- 👤 Lewis H Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:55
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02
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) | 1933-03-17 | 1933-09-16 | 1934-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-03-17 | 1937-09-16 | 1938-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-03-17 | 1941-09-16 | 1942-03-18 | $7700.00 | Window Closed / Lapsed |