ES154841A1 -
ADJUSTABLE DEVICE FOR BRAKING THE SUPPLEMENTARY THREAD REELS FOR THE EDGES, WHICH ARE USED IN THE MECHANICAL TEXAS TELESCOPES
- Google Patents
ADJUSTABLE DEVICE FOR BRAKING THE SUPPLEMENTARY THREAD REELS FOR THE EDGES, WHICH ARE USED IN THE MECHANICAL TEXAS TELESCOPES
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ES154841A1941-10-221941-10-22
ADJUSTABLE DEVICE FOR BRAKING THE SUPPLEMENTARY THREAD REELS FOR THE EDGES, WHICH ARE USED IN THE MECHANICAL TEXAS TELESCOPES
ExpiredES154841A1
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