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David J. Ludlow
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Salt Lake City, UT, US
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Patents Grants
last 30 patents
Information
Patent Grant
Spa construction and installation system
Patent number
8,881,321
Issue date
Nov 11, 2014
David J. Ludlow
E04 - BUILDING
Information
Patent Grant
In-ground spa installation
Patent number
8,869,469
Issue date
Oct 28, 2014
Bullfrog International, L.C.
David J. Ludlow
E04 - BUILDING
Information
Patent Grant
Spas and bathing systems with upgradeable and interchangeable jet s...
Patent number
8,661,576
Issue date
Mar 4, 2014
David J. Ludlow
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Spas and bathing systems with upgradeable and interchangeable jet s...
Patent number
7,908,684
Issue date
Mar 22, 2011
Bullfrog International, L.C.
David J. Ludlow
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Integrated manifold system for spas
Patent number
6,543,067
Issue date
Apr 8, 2003
Bullfrog International, L.C.
Richard Alex Eddington
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Modular system for spas and bathing systems
Patent number
6,256,805
Issue date
Jul 10, 2001
Bullfrog International, L.C.
David Jon Ludlow
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Plumbing and shell system for spa
Patent number
6,092,246
Issue date
Jul 25, 2000
David Jon Ludlow
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Modular system for spas and bathing systems
Patent number
5,987,663
Issue date
Nov 23, 1999
Bullfrog International, L.C.
David Jon Ludlow
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Plumbing and shell system for spa
Patent number
5,754,989
Issue date
May 26, 1998
David Jon Ludlow
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Top mounted biological filtration system for an aquarium
Patent number
5,474,673
Issue date
Dec 12, 1995
David J. Ludlow
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Patents Applications
last 30 patents
Information
Patent Application
IN-GROUND SPA INSTALLATION
Publication number
20130152297
Publication date
Jun 20, 2013
David J. Ludlow
E04 - BUILDING
Information
Patent Application
SPAS AND BATHING SYSTEMS WITH UPGRADEABLE AND INTERCHANGEABLE JET S...
Publication number
20110225720
Publication date
Sep 22, 2011
Stephen M. Fleischer
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
SPA CONSTRUCTION AND INSTALLATION SYSTEM
Publication number
20090172873
Publication date
Jul 9, 2009
David J. Ludlow
E04 - BUILDING
Information
Patent Application
SPAS AND BATHING SYSTEMS WITH UPGRADEABLE AND INTERCHANGEABLE JET S...
Publication number
20070289057
Publication date
Dec 20, 2007
David J. Ludlow
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
INTEGRATED MANIFOLD SYSTEM FOR SPAS
Publication number
20030024041
Publication date
Feb 6, 2003
Bullfrog International, L.C.
Richard Alex Eddington
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE