| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Audio-visual technology | |
| #5 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Cameras | |
| #2 | Unspecified technologies | |
| #3 | Gearing | |
| #4 | Windows or door furnishings | |
| #5 | Advertising | |
| #6 | Optical systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Isbills William L | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US1828971A | Method and apparatus for projecting multicolor rays | |
| US1680619A | Method and apparatus for producing colored projected pictures | |
| US1457525A | Friction wheel | |
| US1457524A | Friction wheel | |
| US1550320A | Projecting apparatus | |
| US1429244A | Projector lantern | |
| CA193184A | Picture carrier | |
| US1260673A | Picture-carrier for use in connection with projector-lanterns. | |
| US1258905A | Endless flexible-picture holder and carrier device for projector-lanterns. | |
| US641115A | Curtain-holder. | |
| CA255081A | Projecting apparatus | |
| CA263309A | Picture projecting apparatus | |
| CA234256A | Friction wheel |