Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885888 | Insulating non-removable type concrete wall forming structure and device and system for attaching wall coverings thereto | — | 1989-12-12 |
| 4866891 | Permanent non-removable insulating type concrete wall forming structure | — | 1989-09-19 |
| 4852902 | Towing hitch cover | Kenneth Bol | 1989-08-01 |
| 4851462 | Adhesive for bonding cured EPDM rubber containing a crosslinked halogenated butyl rubber | Chester T. Chmiel | 1989-07-25 |
| 4815752 | Lift unit for weight distributing trailer hitch | James L. Mellow | 1989-03-28 |
| 4807864 | Hand surgery table | — | 1989-02-28 |