| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines | |
| #3 | Measurement | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Postal sorting | |
| #3 | Shafts | |
| #4 | Measuring length, angles and areas |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rotzoll Dr-Ing Erich | 7 |
| #2 | Hofmann Erich | 4 |
| #3 | Lefherz Guenther | 3 |
| #4 | Schmidt Hans-Otto | 2 |
| #5 | Hannover-Kirchrode Dr-Ing Eric | 1 |
| #6 | Heinemann Julius | 1 |
| #7 | Hofmann William | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES365244A1 | Centerless circular grinder | |
| FR1316314A | Method and device for repeatedly dressing the grinding wheel of precision grinding machines, in particular centerless machines for grinding cylindrical surfaces | |
| FR1216108A | Device for dressing the drive grinding wheel of machines for grinding cylindrical surfaces without points during continuous grinding | |
| FR1183986A | Device for grinding without rod centers or bars | |
| FR1169466A | Process for the control of parts rectified in a row on grinding machines without points |