| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 8 | |
| #2 | France | 3 | |
| #3 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Spectacles | |
| #3 | Grinding tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rudd Milo O | 6 |
| #2 | Woronoff Alexander M | 3 |
| #3 | Beasley George A | 3 |
| #4 | Tripp Walter C | 1 |
| #5 | Catron William M | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA815231A | Lens blank unit | |
| CA811935A | Method and apparatus for processing of ophthalmic lens | |
| CA853421A | Two-piece ring block for lens blanks | |
| CA861188A | Grinding pad | |
| CA778562A | Method and apparatus for processing of ophthalmic lens | |
| CA825916A | Device for applying an indexing plug to a semi-finished lens blank | |
| CA869243A | Method of producing a replaceable grinding pad | |
| CA824912A | Multifocal lens blank manufacture |