| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Civil engineering | |
| #3 | Furniture and games | |
| #4 | Consumer goods | |
| #5 | Audio-visual technology | |
| #6 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Nails | |
| #2 | Structural elements | |
| #3 | Frames | |
| #4 | Special furniture | |
| #5 | Hand carried bags | |
| #6 | Advertising | |
| #7 | Pipes | |
| #8 | General building constructions | |
| #9 | Antennas | |
| #10 | Scaffolding |
| # | Name | Total Patents |
|---|---|---|
| #1 | Seifert Karl | 9 |
| #2 | Ihne Hans Joachim | 3 |
| #3 | Gebrueder Seifert | 1 |
| #4 | Gebr Seifert | 1 |
| #5 | Seifert Gebr | 1 |
| #6 | Stede Max | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2832674A1 | Plastics support spacer for concrete reinforcement - has radiating arms and end feet in centrally intersecting planes | |
| DE2239115A1 | SPACERS FOR REINFORCEMENT SYSTEMS IN CONCRETE COMPONENTS | |
| DE2228868A1 | SPACERS FOR REINFORCEMENT TO BE EMBEDDED IN CONCRETE COMPONENTS | |
| DE2058647A1 | Spacer for concrete reinforcement | |
| DE1801575A1 | Spreader for double wall formwork | |
| DE1559420A1 | Suspension device for false ceilings and the like. on concrete ceilings | |
| DE411977C | Stand with sliding tubes |