DE 13
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German patent system Klasse 13, was for "Dampfkessel und Ausrüstung" -- Steam boilers and related equipment.[1]
This wiki has 4 patents in category "DE 13".
Patents in category DE 13
- Patent DE-1880-12850 (English title: Innovations in steam boilers, Inventors: Jean Marie Felix du Temple, Filing date: 1880-06-28)
- Patent DE-1881-16103 (English title: Innovations in steam boilers, Inventors: Otto Lilienthal, Filing date: 1881-04-09)
- Patent DE-1884-29080 (English title: Coiled tube boiler, Inventors: Otto Lilienthal, Filing date: 1884-04-30)
- Patent DE-1887-42698 (English title: Radiator, Inventors: Otto Lilienthal, Filing date: 1887-09-21)
References
| Enclosing categories | German patent classifications |
|---|---|
| Subcategories | |
| Keywords | steam engines, Engines |
| Start year | |
| End year |
