MH

Margaret A. Hartfel

3M: 9 patents #1,775 of 11,543Top 20%
📍 Minneapolis, MN: #735 of 6,114 inventorsTop 15%
🗺 Minnesota: #8,331 of 52,454 inventorsTop 20%
Overall (All Time): #574,231 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
9211553 Apparatus for spraying liquids, and adapters and liquid reservoirs suitable for use therewith Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerome E. Salhus 2015-12-15
8955770 Apparatus for spraying liquids, and adapters and liquid reservoirs suitable for use therewith Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerome E. Salhus 2015-02-17
8628026 Apparatus for spraying liquids, and disposable containers and liners suitable for use therewith Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus 2014-01-14
8424780 Apparatus for spraying liquids, and adapters and liquid reservoirs suitable for use therewith Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus 2013-04-23
8002200 Apparatus for spraying liquids, and disposable containers and liners suitable for use therewith Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus 2011-08-23
7798421 Apparatus for spraying liquids, and disposable containers and liners suitable for use therewith Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus 2010-09-21
6820824 Apparatus for spraying liquids, disposable containers and liners suitable for use therewith Stephen C. P. Joseph, Malcolm F. Douglas, Alan F. Butler, David R. Bastow, Jerry E. Salhus 2004-11-23
5491015 Slip control sheeting and articles covered with same Mark E. Reeves, Forrest J. Rouser, Kenneth L. Smith, Olester Benson, Jr. 1996-02-13
5234740 Slip control sheeting and articles covered with same Mark E. Reeves, Forrest J. Rouser, Kenneth L. Smith 1993-08-10