Issued Patents 2025
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12421798 | Drive and carriage for material hoist | Michael James Maczko, Charles J. MacKarvich | 2025-09-23 |
| 12359452 | Fall protection system and guardrail post assembly therefor | Charles J. MacKarvich | 2025-07-15 |