US2984731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc cutting electrodes
Assignee: BOC Group Ltd
•
Filing: 1958-05-06
•
Granted: 1961-05-16
•
Expires: 1978-05-06
Abstract
No abstract record available.
Inventors
- 👤 Bradshaw James Ronald
- 👤 Cresswell Robert Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:00
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/013; B23K35/00; B23K35/02; B23K35/0205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1898060A
Cited
US1512786A
Cited
US2298633A
Cited
US2274631A
Cited
US2387903A
Cited
US2389945A
Cited
US2813966A
Cited
US2806124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |