| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Venting or aerating devices | |
| #3 | Pistons and sealings | |
| #4 | Lubricating | |
| #5 | Pipes | |
| #6 | Measuring force, work and fluid pressure | |
| #7 | Nails |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nimberger Spencer M | 9 |
| #2 | Cooper Jack M | 3 |
| Publication | Filing date | Title |
|---|---|---|
| CA1288258C | Pressure signal instrumentation having removable flanges and mounting method therefor | |
| US4655251A | Valve having hard and soft seats | |
| US4630629A | Valve with compressible valve stem and valve body seals | |
| US4597581A | Pressure seal for valve stems and the like | |
| US4582089A | Valve manifold having a removable flange | |
| US4556196A | Method and apparatus for sealing valve stems | |
| US4512441A | Blowdown fitting | |
| US4347915A | Grease fitting |