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- Patent number 341,577. 1
- PATENT NUMBER 307,759.
- PATENT NUMBER 307,759.
- PATENT NUMBER 307,759.
- PATENT NUMBER 307,759.
- PATENT NUMBER 307,759.
- Patent number 3,520,201. 2 sheets-sheet 2.
- Patent number 3,520,201. 2 sheets-sheet 1.
- Patent number 3,483,364. Sheet 8 of 8.
- Patent number 3,483,364. Sheet 1 of 8.
- Patent number 3,483,364. Page 1.
- Patent number 2,931,177. Sheet 2 of 2.
- Patent number 2,931,177. Page 4.
- Patent number 2,931,177. Page 3.
- Patent number 2,931,177. Page 2.