IP Library › Granted Patent US 4,800,930
Granted Patent Utility
US 4,800,930 · App. 06/029,628

Solvent for porous mass acetylene containers

Inventor: Michael S. Rabren
Patented Case View Patent ↗
Granted: Jan 31, 1989 Filed: Mar 24, 1987
Inventor
Michael S. Rabren

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,800,930
App. No.
06/029,628
Filed
1987-03-24
Granted
1989-01-31
Kind
A