DD

Donald R. Davidson

HA H-Tech Ag: 9 patents #1 of 61Top 2%
SS Ssmc: 7 patents #2 of 50Top 4%
TL The Singer Company Limited: 6 patents #33 of 510Top 7%
AI Atwood Industries: 1 patents #14 of 44Top 35%
HI Hayward Industries: 1 patents #97 of 138Top 75%
HE Henkin-Laby: 1 patents #3 of 5Top 60%
Overall (All Time): #175,513 of 4,157,543Top 5%
24
Patents All Time

Issued Patents All Time

Showing 1–24 of 24 patents

Patent #TitleCo-InventorsDate
7318448 Swimming pool cleaning apparatus and parts therefor Eric Charles Fleischer, Bernhard Schaub, Melvyn L. Henkin, Jordan M. Laby 2008-01-15
6254788 Method of sanitizing water in a bathing pool 2001-07-03
6004458 Filter/sanitizer 1999-12-21
5993753 Chlorinator/sanitizer and method of using same 1999-11-30
5882528 Method for extending useful life of filter aid in a filter with hydraulically deformable system 1999-03-16
5871641 Fluid filter with pleated septum 1999-02-16
5788258 Folding ball hitch with recessed safety chain attachment George P. Gill, David L. Swanson 1998-08-04
5607224 Plastic niche and grounding assembly therefor Samuel Tobias, Robert H. Hanes 1997-03-04
5591329 Fluid filter with pleated septum 1997-01-07
5432688 Plastic niche and grounding assembly therefor Samuel Tobias, Robert H. Hanes 1995-07-11
5271561 Rotary jet hydrotherapy device and method Samuel Tobias, Robert M. Messinger 1993-12-21
D313097 Steam iron sole plate for seam opening or similar article Gerald J. Creed, Howard D. Rogers 1990-12-18
D312906 Steam iron sole plate for accommodating buttons and pleats or similar article Gerald J. Creed, Howard D. Rogers 1990-12-11
D312907 Steam iron sole plate for accommodating zippers or similar article Gerald J. Creed, Howard D. Rogers 1990-12-11
D312905 Steam iron sole plate for high nap fabrics or similar article Gerald J. Creed, Howard D. Rogers 1990-12-11
4955152 Steam ironing press Pao-Ter Huang, H. David Rogers 1990-09-11
4953300 Steam ironing press Pao-Ter Huang, H. David Rogers 1990-09-04
4922637 Steam ironing press #1 Pao-Ter Huang, H. David Rogers 1990-05-08
4434729 Continuous monogrammer 1984-03-06
4386573 Embroidery attachment for electronic sewing machine Gerhard Reinert 1983-06-07
4380961 Variably controllable bobbin thread pull-off mechanism Gerhard Reinert 1983-04-26
4372237 Two dimensional feed for monogram sewing machine Peter J. Totino 1983-02-08
4316562 Button attaching tool Wesley R. Peterson 1982-02-23
4296698 Button attaching hand tool with button storage compartment Walter H. W. Marsh 1981-10-27