Home/Tech & Practice
Evidence and press
The originals
Letters, test reports and press articles from the archive. One click enlarges the document. The highlighter marks the key passages, with a short explanation beside them. Each document shows the position as of its date.
Press and public sources
Who reported on it
- EXPO 2000 HannoverProject “High-performance filter: filtering instead of changing oil”, topic: environment. One of 280 Worldwide Projects in Germany. Official entry
- Main-Post, 26 May 2000Report on the EDEKA trucks in Gochsheim and the inventor, by Roland Lörzer.
- Hamburger Abendblatt, 11 January 2000Pinneberger Zeitung, p. 3: six PVG buses, over 2 million km. The manufacturer quotes the article on its site. Archive page
- changeX, 5 January 2001Portrait “I want to free Germany from waste oil”. To the article
- NABU “Naturschutz heute” 2/99Full-page environmental tip in the members’ magazine, according to the manufacturer’s notice of 14 May 1999. Archive page
- BR, Franz GernstlA team around Franz Gernstl met Hermann Trabold in 1998. Repeated in “Gernstls Zeitreisen” and “Bayern erleben”. Episode guide
- MDR “Einfach Genial”, 2001According to the manufacturer, Hermann Trabold received the 1st “Einfach Genial” prize from MDR for his fine oil filter. The year comes from the partner site. Archive page · Partner site
Patents
Two patents, several countries
The inventor and holder was Hermann Trabold. You can read every patent document online.
| Document | Content | Date |
|---|---|---|
| DE 38 42 017 C2 | Oil filter for combustion engines | 24.01.1991 |
| US 5,178,753 | same invention, USA | 12.01.1993 |
| DE 40 30 304 C2 | Filter for filtering gaseous and liquid media | 27.10.1994 |
| EP 0 503 028 B1 | same invention, Europe | 14.12.1994 |
| US 5,556,543 | same invention, USA | 17.09.1996 |
The types of source
- Original
Scan of the document from the archive.
- Manufacturer
Statement by Trabold Filter GmbH.
- Partner site
Reproduced by a sales partner.
- Press
Report by a newspaper or broadcaster.
Read for yourself
The pages in the Internet Archive
Since 1998 the Internet Archive has saved the manufacturer’s website again and again. From here you go straight to the originals.
- 1998The earliest saved home page
- 1998The filter system, detailed version
- 2001The news from 1998 to 2000
- 2001The reference letters
- 2001The benefits at a glance
- 2001The cost comparison in D-Mark
- 2002The first online calculator
- 2002The field test
- 2002The technical data
- 2005The website from 2005
- 2010Questions and answers
- EXPOThe project entry, still online