Inventor
Peter J. Nyvall
Inventor
Richfield, MN, US
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E03Cprimary
E03CDomestic plumbing installations for fresh water or waste water33%
F16KValves33%
Y10TTechnical subjects covered by former us classification33%
PatentTitleYear
6,415,816'Air admittance valve assembly'2002Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2002Patents assigned to CHERNE IND INC (1)· patent assignee history
2002Based in Richfield, MN, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CHERNE IND INC | 1 | 2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Richfield, Minnesota, US | 1 | 2002 |