DH

David U. Hillstrom

MD Marketing Displays: 50 patents #1 of 51Top 2%
MI Marketing Displays International: 4 patents #2 of 3Top 70%
BG B. F. Goodrich: 1 patents #389 of 734Top 55%
📍 Novi, MI: #29 of 1,560 inventorsTop 2%
🗺 Michigan: #717 of 86,293 inventorsTop 1%
Overall (All Time): #43,402 of 4,157,543Top 2%
57
Patents All Time

Issued Patents All Time

Showing 26–50 of 57 patents

Patent #TitleCo-InventorsDate
5746503 Illuminated canopy system Brian Hillstrom 1998-05-05
5738294 Movable apparatus for installing flexible sign panels Vladimir Yasnogorodskiy 1998-04-14
D392686 Sign stand with rolling base Robert Sarkisian, David J. Muir 1998-03-24
5725173 Movable apparatus for installing flexible sign panels Vladimir Yasnogorodskiy, W. Douglas Schellig 1998-03-10
5725186 Universal flexible sign mounting device James J. Mason 1998-03-10
5713659 Illuminated canopy with access doors Brian Hillstrom 1998-02-03
5685054 Method for installing flexible sign panels with movable device Vladimir Yasnogorodskiy 1997-11-11
5682694 Outdoor menu display device 1997-11-04
5675923 Rigid sign with protective changeable indicia member John M. Sarkisian 1997-10-14
5647155 Sheet tensioning system 1997-07-15
5613763 Method for installing illuminated canopy system Brian Hillstrom 1997-03-25
5537302 Illuminated sign with patterned openings on light dispersion member Brian Hillstrom 1996-07-16
5442871 Poster and sign display assembly Robert Sarkisian, David J. Muir 1995-08-22
D360078 Wall mounted sign frame Robert Sarkisian, David J. Muir 1995-07-11
5428913 Pole banner system 1995-07-04
5381324 Illuminated canopy system Brian Hillstrom 1995-01-10
D351863 Free standing sign stand Robert Sarkisian, David J. Muir 1994-10-25
5142804 Releasable anchoring and tensioning apparatus for billboard displays Nicholas A. DeRosa 1992-09-01
5040586 Banner holding device 1991-08-20
4958458 Poster display device with longitudinal retention of frame sections by inserts Randall Palmer, Brian Hillstrom 1990-09-25
4937959 Poster display device with longitudinal retention of frame sections Randall Palmer 1990-07-03
4862615 Releasable anchoring and tensioning apparatus for billboard displays 1989-09-05
4823533 Structural cladding apparatus 1989-04-25
4782610 Display assembly with illumination system Donald R. Gaines, Donald L. Gaines, John E. Chandler 1988-11-08
4756107 Display retention and tensioning frame 1988-07-12