DH

David M. Hadden

DE Delphian: 3 patents #1 of 16Top 7%
NP New West Products: 1 patents #5 of 7Top 75%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #459,528 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
D834767 Ergonomic pet comb handle 2018-11-27
10086894 Safety device Alex O. Arkhangelskiy, Johannes Boot, Taylor Alexander, David Venhaus, Hugo Haselhuhn 2018-10-02
7942555 Multi-action, battery-powered, trigger-activated lighting system 2011-05-17
6324977 Stamp assembly with embossing member 2001-12-04
5989666 Aesthetic structure with simulated leading 1999-11-23
5819458 Reinforced picture frame moulding 1998-10-13
5480030 Reusable, evacuable enclosure for storage of clothing and the like Gerald Sweeney, James W. Pfeiffer, Kenneth L. Blanchard, Howard Mullin 1996-01-02
5380119 Resiliently yieldable picture frame corner insert 1995-01-10
4489590 Method and apparatus for gas detector calibration 1984-12-25
4476706 Remote calibration system Eric Scott Micko 1984-10-16
4260950 Automatic portable pH meter and method with calibration receptacle Eric Scott Micko 1981-04-07