US3034016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc welding current control apparatus
Assignee: HIRST ELECTRONIC Ltd
•
Filing: 1959-12-21
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Granted: 1962-05-08
•
Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 John D Morris
- 👤 Hirst Sydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:21
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/32; G05F1/33; B; B23; B23K; B23K9/00; B23K9/10; B23K9/1006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |