| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | Spain | 4 | |
| #3 | Canada | 3 | |
| #4 | Germany | 3 | |
| #5 | France | 1 | |
| #6 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Measurement | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Television | |
| #2 | Analysing materials | |
| #3 | Measuring light | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | France Henri De | 6 |
| #2 | De France Henri | 4 |
| #3 | Cahen Roger R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES156375A1 | Improvements introduced in frequency multiplier or multiplier systems of the lso type used in tv | |
| ES156302A1 | Improvements in the oscillation generating systems and in their regulation procedures, especially for television | |
| ES156202A1 | Improvements in the procedures of the type of the used apra the synchronization of the images in television | |
| GB621484A | Improvements in and relating to synchronising arrangements for television systems | |
| CA834874A | Colour television tubes | |
| CA462305A | Number reading device | |
| CA453939A | Television method or system |