IP Library Granted Patent US 4,833,450
Granted Patent Utility
US 4,833,450 · App. 07/182,213

Fault detection in combination intrusion detection systems

Inventors: Charles S. Buccola, Lawrence M. Kolb
Patented Case View Patent ↗
Granted: May 23, 1989 Filed: Apr 15, 1988
Inventors
Charles S. Buccola
Lawrence M. Kolb
Assignee (at issue)
NAPCO Security Systems, 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 4,833,450
App. No.
07/182,213
Filed
1988-04-15
Granted
1989-05-23
Kind
A