IP Library Granted Patent US 4,064,206
Granted Patent Utility
US 4,064,206 · App. 05/653,053

Process for forming flexible fold lines in thermoplastic sheets

Inventor: Gerhard Seufert
Patented Case View Patent ↗
Granted: Dec 20, 1977 Filed: Jan 28, 1976
Inventor
Gerhard Seufert

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

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Quick Facts
Patent No.
US 4,064,206
App. No.
05/653,053
Filed
1976-01-28
Granted
1977-12-20
Kind
A