US2231014A
Expired / Lapsed
US
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Welding process and apparatus
Assignee: Union Carbide and Carbon Research Laboratories Inc
•
Filing: 1938-12-03
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Granted: 1941-02-11
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Expires: 1958-12-03
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Lytle
- 👤 Morton William
- 👤 Leonard V Spangberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:39
CPC Classifications
B; B23; B23K; B23K5/00; B23K5/006; E; E01; E01B; E01B11/00; E01B11/44; E01B11/50; Y; Y10; Y10S; Y10S220/00; Y10S220/29; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828; Y10T29/49829; Y10T29/51; Y10T29/5199
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-02-11 | 1944-08-12 | 1945-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-11 | 1948-08-12 | 1949-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-11 | 1952-08-12 | 1953-02-11 | $7700.00 | Window Closed / Lapsed |