US3538376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc current stabilization by control of electrode feed speed
Assignee: Airco Inc
•
Filing: 1967-03-03
•
Granted: 1970-11-03
•
Expires: 1987-03-03
Abstract
No abstract record available.
Inventors
- 👤 John C Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:48
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/06; B23K9/073; B23K9/0732
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2921222A
Cited
US3024353A
Cited
US3219343A
Cited
US3194939A
Cited
US3233076A
Cited
US3376374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |