DB

Donald D. Bartholomew

PT Proprietary Technology: 99 patents #1 of 1Top 100%
📍 Marine City, MI: #1 of 44 inventorsTop 3%
🗺 Michigan: #215 of 86,293 inventorsTop 1%
Overall (All Time): #13,249 of 4,157,543Top 1%
105
Patents All Time

Issued Patents All Time

Showing 1–25 of 105 patents

Patent #TitleCo-InventorsDate
6234544 Quick connector with confirmation feature 2001-05-22
6170886 Quick connector 2001-01-09
6086113 Means of coupling of non-threaded connections 2000-07-11
6062607 Quick connector with secondary latch confirming feature 2000-05-16
6014884 Method of bending tubing 2000-01-18
6010160 Quick connector having ring for confirming proper connection 2000-01-04
5992903 Swivelable quick connector assembly 1999-11-30
5964484 Swivelable quick connector assembly 1999-10-12
5931509 Connection verification and secondary latch device 1999-08-03
5927761 Means of coupling of non-threaded connections 1999-07-27
5868435 Apparatus for and method of attaching conduits to a fitting 1999-02-09
5853204 Means of coupling non-threaded connections 1998-12-29
5826920 Conduit coupling 1998-10-27
5794984 Quick connector 1998-08-18
5782508 Swivelable quick connector assembly 1998-07-21
5779279 Connection verification and secondary latch device 1998-07-14
5775738 Means of coupling of non-threaded connections 1998-07-07
5732984 Manually releasable quick connector 1998-03-31
5716079 Hose assembly having a distortion limiting wall for creating a dynamic seal 1998-02-10
5655796 Tubular assembly and method of making same 1997-08-12
5626371 Quick connector with one-piece retainer 1997-05-06
5621959 Method of attaching a bead assembly to a tubular conduit 1997-04-22
5582210 Spring metal flow control apparatus 1996-12-10
5582436 Apparatus for attaching hoses and tubes to a fitting 1996-12-10
5582437 Swivelable connector for plain end tubes 1996-12-10