IP Library › Granted Patent US 4,823,527
Granted Patent Utility
US 4,823,527 · App. 07/091,692

Plumbing concrete form accessory

Inventor: Gerold J. Harbeke
Patented Case View Patent ↗
Granted: Apr 25, 1989 Filed: Sep 1, 1987
Inventor
Gerold J. Harbeke

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 4,823,527
App. No.
07/091,692
Filed
1987-09-01
Granted
1989-04-25
Kind
A