Letters-Patent For Inventions
- Undertitel
- Why They Are So Often Worthless; How To Obtain Valuable Patents; How To Avoid The Losses And Disappointments (1883)
- ISBN
- 9781120314925
- Språk
- engelska
- Vikt
- 127 gram
- Utgivningsdatum
- 2009-10-15
- Förlag
- Kessinger Publishing
- Sidor
- 32

