US2470067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding current indicator and lockout
Assignee: ThyssenKrupp Budd Co
•
Filing: 1944-02-24
•
Granted: 1949-05-10
•
Expires: 1964-02-24
Abstract
No abstract record available.
Inventors
- 👤 Edwin M Callender
- 👤 Robert S Phair
- 👤 Herbert D Van Sciver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:48
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2159751A
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US2138790A
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US2130440A
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US2261686A
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US2313975A
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US2335382A
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US2369678A
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US2377506A
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US2422766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |