Title:
Method and apparatus for magnetically marking sheet steel by deposition of metal ions
United States Patent 3158805
Inventors:
Kalbfell, David C.
Publication Date:
11/24/1964
Assignee:
Kalbfell, David C.
Other Classes:
324/206, 204/298.050, 324/243, 427/528, 427/526, 219/109, 219/76.140
International Classes:
H01F41/18; H01F41/14
US Patent References:
| 2703384 | Apparatus for measuring the thickness of nonmagnetic coatings on magnetic material | | | |
| 2814719 | Automatic electric arc-stitch welding | | | |
| 2832040 | Direct reading seam depth indicator | | | |
| 2844788 | Magnetic sheet detecting means | | | |
| 2845524 | Arc welding apparatus | | | |
| 2885534 | Electric arc welding apparatus | | | |
| 2922023 | Electric arc process and apparatus | | | |