Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10940348 | Push on/pull off protective cap for fire protection sprinklers | Michael J. Oldham, Shawn G. Orr, Frank RÖNNFELDT | 2021-03-09 |
| 10940349 | Protective cap for a sprinkler nozzle, use of such a protective cap, and method for assembling and/or disassembling a sprinkler nozzle on a pipeline | Frank RÖNNFELDT | 2021-03-09 |
| 10926120 | Sprinkler housing for a sprinkler, sprinkler for fire extinguishing systems, and use thereof | Frank RÖNNFELDT | 2021-02-23 |
| 10888725 | Sprinkler for fire extinguisher systems | Frank Roennfeldt | 2021-01-12 |
| 10589331 | Method and device for separating wound tubes having welded parts | Torsten Kappenstein, Gerald Kolbe | 2020-03-17 |