MARK ROSS KELLEY
Pilots in El Granada, CA

License number
California A0997650
Issued Date
Jul 2015
Expiration Date
Jul 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
PO Box 131, El Granada, CA 94018
LicenseFiles verified this license of May 6, 2017 at the Federal Aviation Administration.

Professional information

Mark Kelley Photo 1

Plug For Pier Hole

US Patent:
4911586, Mar 27, 1990
Filed:
Jan 18, 1989
Appl. No.:
7/298427
Inventors:
Mark R. Kelley - El Granada CA
Ronald P. Mackwood - Hayward CA
John M. Broderick - San Mateo CA
International Classification:
E02D 500
US Classification:
405303
Abstract:
An inflatable, stretchable plug for obstructing a hole drilled in the ground for a foundation pier comprises a sturdy elastic envelope having an air valve mounted in the wall thereof for connection with outside supply of pressurized air and a handle bonded to upper portion of the envelope for easy removal of the plug from the hole before concrete mixture is poured in to produce the pier.

Pilots licenses in California