
Letters-Patent For Inventions
- Undertittel
- Why They Are So Often Worthless; How To Obtain Valuable Patents; How To Avoid The Losses And Disappointments (1883)
- Forfatter
- J. McC. Perkins
- ISBN
- 9781120314925
- Språk
- Engelsk
- Vekt
- 150 gram
- Utgivelsesdato
- 15.10.2009
- Antall sider
- 32
