Patent:BE558585
Patent: | BE 558585 |
Title: | Rekeninrichting |
Date: | 21.12.1951 |
Place: | Eindhoven, Niederlande |
Country: | Belgium |
Person: | |
Company: | NV Philips' Gloeilampenfabrieken |
Internal Links: | |
Keywords: | Rechenschieber |
Link to the patent office: (without guarantee) | ![]() |
Beleuchtungsrechenschieber