| Signature mark | NL 218/2351 |
|---|---|
| Subject | Urkunde (1) |
| Title | Patenturkunde des United States Patent Office zu Oskar Salas Erfindung "Synchronizing system for electrical music instruments" |
| Insert | Patentschrift US 2740892, 03.04.1956 |
| Places | Washington, D.C. |
| Duration | 03.04.1956 |
| Scope | 6 Bl. gedr. u. ms. |
| Formal information | Languages: Englisch |
| Rights notice | CC BY-SA 4.0 |
