US3452180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automated control system for high speed arc welding
Assignee: Harnischfeger Corp
•
Filing: 1966-04-18
•
Granted: 1969-06-24
•
Expires: 1986-04-18
Abstract
No abstract record available.
Inventors
- 👤 John G Bollinger
- 👤 Michael A Stankey
- 👤 Howard L Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:44
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/127; B23K9/1272
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2189399A
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US2670423A
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US2827547A
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US2827548A
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US2839663A
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US3072779A
Cited
US3158121A
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US3216641A
Cited
US3171012A
Cited
US3281047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |