DP

David W. Presby

PT Presby Patent Trust: 8 patents #1 of 1Top 100%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Sugar Hill, NH: #1 of 3 inventorsTop 35%
🗺 New Hampshire: #467 of 12,181 inventorsTop 4%
Overall (All Time): #160,820 of 4,157,543Top 4%
25
Patents All Time

Issued Patents All Time

Showing 1–25 of 25 patents

Patent #TitleCo-InventorsDate
12018223 Biofuel and method of biofuel production 2024-06-25
12005825 Loading/unloading device for a delivery vehicle 2024-06-11
11364834 Loading/unloading device for a delivery vehicle 2022-06-21
11161445 Loading/unloading device for a delivery vehicle 2021-11-02
11021380 Modular wastewater treatment system configured for compact shipping 2021-06-01
10576863 Loading/unloading device for a delivery vehicle 2020-03-03
9783439 Modular liquid waste treatment system and method 2017-10-10
9556604 Liquid waste treatment apparatus 2017-01-31
9192941 Aggregate analysis techniques and apparatus 2015-11-24
8999153 Liquid waste treatment system 2015-04-07
8815094 Fluid conduit with layered and partial covering material thereon 2014-08-26
8807345 Apparatus and method for analyzing aggregate 2014-08-19
8501006 Apparatus and method for processing liquid waste 2013-08-06
8342212 Fluid conduit with layered and partial covering material thereon 2013-01-01
7713414 Method for removal of contaminants from water 2010-05-11
7288190 Method, apparatus and system for removal of contaminants from water 2007-10-30
7270532 Skimmer tab former 2007-09-18
6899359 Means for coupling conduit 2005-05-31
6792977 End cap for a corrugated conduit 2004-09-21
6461078 Plastic sewage pipe 2002-10-08
6290429 Multi-level leaching system 2001-09-18
5954451 Multi-layer material for processing septic efficient and waste water and method of using the same 1999-09-21
5606786 Apparatus and method for producing pipe and pipe produced thereby 1997-03-04
5429752 Means for precipitating out suspended solids in septic tank liquids 1995-07-04
4373285 Gun muzzle loader Kenneth M. Grout 1983-02-15