US2889447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode holder
Assignee: Individual
•
Filing: 1957-08-30
•
Granted: 1959-06-02
•
Expires: 1977-08-30
Abstract
No abstract record available.
Inventors
- 👤 Robert W Runkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:22
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2174809A
Cited
US2312763A
Cited
US2294321A
Cited
US2336712A
Cited
US2364508A
Cited
US2375836A
Cited
US2395213A
Cited
US2432639A
Cited
US2411652A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |