| All returns accepted | ReturnsNotAccepted |
|---|---|
| Time Period Manufactured | 1930-Now |
| Country/Region of Manufacture | United States |
| Modified Item | No |
Check the listing for details. Graham Transmissions 1956 Patent Computer Variable Speed Drives Booklet Envelope. Condition: Used. Listed at 55.00 USD. Graham Transmissions 1956 Patent Computer Variable Speed Drives Booklet Envelope. Condition is "Used". A package produced by Graham Transmissions with a plastic computer or calculator to do engineering calculations. In original envelope, all in good condition.
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