Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4320924 | Reciprocated concrete surfacer member with shielded spring return | Edward R. Langfield, David L. Hird | 1982-03-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4320924 | Reciprocated concrete surfacer member with shielded spring return | Edward R. Langfield, David L. Hird | 1982-03-23 |