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1925-04-28 |
1926-05-25 |
Albert C Wendelken |
Exercising apparatus
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1929-03-19 |
1930-04-22 |
Jens A Christensen |
Pneumatic mattress
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1935-02-08 |
1937-04-13 |
Charles W Greenhill |
Cushioning device
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1945-09-28 |
1948-11-30 |
Clarence A Scriver |
Ski trainer and exerciser
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1948-07-29 |
1950-09-05 |
Lois B Mcguffage |
Adjustable pillow block
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1951-08-10 |
1955-07-26 |
Jordan Samuel Lightfoot |
Exercising device
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1954-02-16 |
1955-05-03 |
Nemeth Steffen Paul |
Mechanical exercise and physical therapy device
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1955-06-08 |
1958-04-08 |
Ludwig Frederic George |
Roller board device
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1955-11-07 |
1958-04-08 |
Frederic G Ludwig |
Roller board device
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1957-12-06 |
1961-07-11 |
Marvin I Glass |
Toy
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1958-10-13 |
1960-06-21 |
Norman F Pedersen |
Ambulatory rocking device
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1959-01-15 |
1962-03-06 |
Bernard L Coplin |
Amusement and exercising toy
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1959-08-27 |
1961-04-04 |
Gabrielson Harold |
Toy
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1964-08-07 |
1967-12-05 |
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Ambulatory exercise device
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1964-09-08 |
1969-02-11 |
George J Brown |
Spring-biased jumping device
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1965-09-30 |
1967-03-21 |
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Skate board
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1965-10-15 |
1970-01-06 |
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Balance and exercising board
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1966-02-04 |
1968-12-17 |
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Balancing exerciser platform with shock absorber means
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1966-11-03 |
1969-06-24 |
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Amusement and physical fitness device
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1966-11-14 |
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Orthopedic cushion
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1967-01-03 |
1968-12-31 |
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Rocking locomotion apparatus
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1967-04-14 |
1970-05-12 |
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Constant resistance exercise device
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1969-06-25 |
1971-09-14 |
Int Enterprises Inc |
Balance ball for amusement and exercise
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1969-08-18 |
1971-06-22 |
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Balancing and exercising device
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Tuff Ind Inc |
Pogo stick type exercising device having a torroid shape bouncing element
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1970-07-01 |
1972-01-13 |
Schilling, Gerd, 8000 München |
Gymnastics hemisphere - of pvc or synthetic rubber
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1970-10-26 |
1975-01-28 |
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1971-05-07 |
1973-07-03 |
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Rocker for physical exercise
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1972-10-10 |
1976-06-15 |
Programming Technologies, Inc. |
Automatic tape loading apparatus for cassettes and the like
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1974-08-05 |
1975-12-30 |
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1975-05-19 |
1976-06-08 |
Studebaker Gary W |
All directions balance board to enhance motor development of the cerebral palsied child
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1975-11-24 |
1976-07-06 |
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1981-04-28 |
Dow Corning Corporation |
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1981-08-25 |
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