| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Engines, pumps and turbines | |
| #3 | Thermal processes | |
| #4 | Computer technology | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Cryptography | |
| #2 | Supplying combustion engines | |
| #3 | Unspecified technologies | |
| #4 | Counting mechanisms | |
| #5 | Details of furnaces | |
| #6 | Furnaces |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wilhelm Hagelin Boris Caesar | 11 |
| #2 | Staffan Ljungdahl | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2917579A | Ciphering machines | |
| US2802047A | Electric switching device for ciphering apparatus | |
| US2832826A | Ciphering means | |
| US2884712A | Ciphering device | |
| US2777556A | Power-driven ciphering devices | |
| US2681253A | Liquid distributing system | |
| US2765364A | Keying mechanism | |
| US2695662A | Fuel distribution to plural injector burners | |
| US2394765A | Ciphering and deciphering mechanism | |
| US2247170A | Ciphering machine | |
| US1846105A | Ciphering apparatus |