US2947847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielded metal arc welding process
Assignee: Union Carbide Corp
•
Filing: 1955-01-14
•
Granted: 1960-08-02
•
Expires: 1975-01-14
Abstract
No abstract record available.
Inventors
- 👤 James R Craig
- 👤 Harry E Rockefeller
- 👤 Frank T Stanchus
- 👤 Davis Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:45
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/29; B23K9/298
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1589017A
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GB143331A
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GB325132A
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US2003167A
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US2043960A
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GB495299A
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GB546961A
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US2308194A
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US2326865A
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GB608270A
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US2544711A
Cited
US2727125A
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US2851581A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |