| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 6 | |
| #3 | United Kingdom | 6 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Optics | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Pistons and sealings | |
| #3 | Optical systems | |
| #4 | Construction of bridges | |
| #5 | General building constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nathan Tracy D | 6 |
| #2 | Rowe Theodore S | 4 |
| #3 | Grimes Kenneth | 1 |
| #4 | Hein Roy C | 1 |
| #5 | Rowe T S | 1 |
| #6 | Mason M | 1 |
| #7 | Wood K | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3729266A | Apparatus for automatically directing and maintaining a beam of electromagnetic radiation relative to earth horizontal | |
| GB1346921A | Elastomeric seal for pipes | |
| US3647229A | Resilient conduit seal | |
| US3508474A | Expansion joint seal,etc. | |
| US3498623A | Gasket | |
| US3386745A | Soil-pipe gasket | |
| US3173699A | Annular gasket | |
| US3173694A | Gasket | |
| GB943687A | A bridge support assembly | |
| CA826082A | Gasket | |
| CA828624A | Gasket for tubular couplings | |
| CA672776A | O-ring for pipe joint | |
| CA666956A | Gasket for a pipe joint or the like | |
| CA730018A | Vibration pad | |
| CA704107A | Annular gasket |