Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7361096 | Waterslide | — | 2008-04-22 | |
| D473823 | Sled construction with pontoons | Geoffrey A. McKee | 2003-04-29 | |
| 6530815 | Bubble tumbler | Jay M. Bro, Daniel Seifert, Syed Hasan, Martin J. Hirsch | 2003-03-11 | |
| 6328286 | Apparatus for blowing streams of bubbles | Ron Boyle, Daniel Seifert, William J. Cajka, Jr. | 2001-12-11 | |
| 6099422 | Pressurized bat | Mark Rappaport, Thomas Grimm | 2000-08-08 | |
| 5935029 | Sound-producing hockey stick | Terry Cyr | 1999-08-10 | |
| 5913709 | Sound-producing golf club | Terry Cyr, James R. Livesey | 1999-06-22 | |
| 4351129 | Flying disc with central insert | Darle L. Kerkenbush, Jimmie L. Whittington | 1982-09-28 | $179,000 |