| Signature mark | FA 004/6471 |
|---|---|
| Subject | Akte (1) |
| Title | Anfrage des Malers Franz Xaver Ehrl aus Wieningeröd an die Technische Begutachtungsstelle des Polytechnischen Vereins betr. Patentanmeldung eines Rußentleerers |
| Contains | u.a. Beschreibung; Zeichnung; Ablehnung eines Teils der Patentansprüche durch das Reichspatentamt; Gutachten für das Hauptamt für Technik |
| Intus | Broschüre über die Anforderungen an Heizungen in Schulen |
| Duration | 1937 - 1938 |
| Scope | 37 Bl. hs., ms. u. gedr. |
| Subject area | Haustechnik. Heizung, Klima < 815.05> |
| Rights notice | CC BY-SA 4.0 |
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