Metal working
Venetian blind assembling
Inventor
active
Cord lock
Method for assembling a venetian blind
Multiple-glazed window assembly
Venetian blind
No associations
LandOfFree
Robbert E. Spangenberg does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with Robbert E. Spangenberg, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Robbert E. Spangenberg will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-533119