Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5056348 | Method of making a profiled sheet metal building unit | Raymond E. Albrecht | 1991-10-15 |
| 4962622 | Profiled sheet metal building unit and method for making the same | Raymond E. Albrecht | 1990-10-16 |
| 4680177 | Processes for the production of blood products | Neville Crawford | 1987-07-14 |
| 4594826 | Field-assembled raceway forming member | — | 1986-06-17 |
| 4324078 | Fire-resistant floor structure | — | 1982-04-13 |
| 4289921 | Electrical activating assembly and closure member therefor | Rodney W. Gartner, John O. Hazen | 1981-09-15 |
| 4232493 | Fire-resistant electrical wiring distributing floor structure and method | John O. Hazen, Charles J. Kelly | 1980-11-11 |