| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Civil engineering | |
| #3 | Machines | |
| #4 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Turning | |
| #3 | Accessories for machine tools | |
| #4 | Working stone | |
| #5 | Telephonic communication | |
| #6 | Metal-working | |
| #7 | Unspecified technologies | |
| #8 | Shaping of plastics |
| # | Name | Total Patents |
|---|---|---|
| #1 | Tilden Carl V | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US3072964A | Apparatus for forming sheet plastic material | |
| US3073909A | Phone dial aid accessory | |
| US2902260A | Drill bit | |
| US2879035A | Drilling apparatus | |
| US2918260A | Core drill construction | |
| US2902259A | Percussion drill bit and method of producing it | |
| US2865607A | Drill bit | |
| US2829898A | Percussive tool chuck | |
| US2840348A | Drill bit | |
| US2579712A | Drill bit | |
| US2506474A | Drill bit | |
| CA488821A | Drill bits |