US Patent: 1,940,475
|
Micrometer caliper
|
Patentees:
|
Eugene J. Witchger (exact or similar names) - Saginaw, MI |
Oscar A. Koebke (exact or similar names) - Saginaw, MI |
|
Patent Dates:
|
Applied: |
May 20, 1932 |
Granted: |
Dec. 19, 1933 |
USPTO (New site tip) Google Patents
Report data errors or omissions to steward
Russ Allen
|
Description: |
Lufkin Thread Micrometer found with this patent and 2,212,910 |
|