Statistical machine controlled by magnetic, frequency coded records
United States Patent 2427383
US Patent References:
Electric control system for tabulating cards, documents, and the like
- - 2224646
Sorting machine for statistical records
- - 2231494
Apparatus for preparing statistical records
- - 2247905
Apparatus for recording statistical data
- - 2247908
Record controlled machine
- - 2254933
Electric control system for tabulating cards, documents, and the like
- - 2224646
Sorting machine for statistical records
- - 2231494
Apparatus for preparing statistical records
- - 2247905
Apparatus for recording statistical data
- - 2247908
Record controlled machine
- - 2254933
Inventors:
Bryce, James W.
Publication Date:
09/16/1947
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Export Citation:
Assignee:
IBM
Primary Class:
Other Classes:
360/79
US Patent References:
| 2272366 | Control element for statistical machines | |||
| 2275609 | Apparatus for verifying statistical data | |||
| 1555281 | Method of recording sound by transference | |||
| 1798641 | Telegraphy method using the five-unit alphabet or similar telegraphic system | |||
| 1870989 | Electrical transmission of messages | |||
| 2325941 | Statistical machine | |||
| 2302025 | Accounting machine |
Foreign References:
| GB529562A |