IP Library Granted Patent US 4,593,739
Granted Patent Utility
US 4,593,739 · App. 06/567,330

Method of and apparatus for packing sand around a mold pattern by vibration

Inventors: Russell J. VanRens, Frank V. Bailey
Patented Case View Patent ↗
Granted: Jun 10, 1986 Filed: Dec 30, 1983
Inventors
Russell J. VanRens
Frank V. Bailey
Assignee (at issue)
Outboard Marine Corporation

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 4,593,739
App. No.
06/567,330
Filed
1983-12-30
Granted
1986-06-10
Kind
A