Christian Sprogar

3 Patents

• US120594842024

  Method for Producing Powder Leads and Products Produced Therewith

  Schwan-stabilo Cosmetics GmbH & Co. KG

  0 cites
• US119119272024

  Wood-encased Pencil

  0 cites
• US116481852023

  Method for Producing Powder Leads and Products Produced Therewith

  0 cites