US2422489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding electrode
Assignee: Huntington Alloys Corp
•
Filing: 1945-06-30
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Granted: 1947-06-17
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Expires: 1965-06-30
Abstract
No abstract record available.
Inventors
- 👤 Theodore E Kihlgren
- 👤 Charles E Lacy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:17
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/365; B23K35/24; B23K35/30; B23K35/3033; B23K35/304; B23K35/3601; B23K35/3602; Y; Y10; Y10S; Y10S220/00; Y10S220/29; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12104; Y10T428/12111; Y10T428/12118; Y10T428/12139; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2951; Y10T428/2955
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) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |