IP Library Granted Patent US 5,528,215
Granted Patent Utility
US 5,528,215 · App. 08/251,462

Building automation system having expansion modules

Inventors: Raymond Siu, Robert Mueller, Thomas F. Racke
Patented Case View Patent ↗
Granted: Jun 18, 1996 Filed: May 31, 1994
Inventors
Raymond Siu
Robert Mueller
Thomas F. Racke
Assignee (at issue)
Landis & Gyr Powers, Inc.

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 5,528,215
App. No.
08/251,462
Filed
1994-05-31
Granted
1996-06-18
Kind
A