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| Number | Title | Issue Date |
| 6443795 | Transmission chain for toys A transmission chain includes a plurality of unitary chain links, each of which has parallel first and second side plates, first and second connecting pins, first and second pivot pins, and first and second pivot seats. The first and second pivot pins of ... | 09/03/2002 |
| 5192251 | Transmission chain structure The invention relates to chain structure comprising several form pieces (1) and a wheel arrangement comprising at least one drive wheel (7) for transferring the chain, which is formed of said form pieces (1). The bearing surface (1B) of each form piece (1... | 03/09/1993 |
| 4882901 | Detachable link chain A transmission or conveyor chain composed of a plurality of interconnected identical links which are attachable and detachable without need for pivot pins or other separate connecting hardware. Each link is preferably molded as a unitary structure of plas... | 11/28/1989 |
| 4815271 | Detachable link chain A transmission or conveyor chain composed of a plurality of interconnected identical links which are attachable and detachable without need for pivot pins or other separate connecting hardware. Each link is preferably molded as a unitary structure of plas... | 03/28/1989 |
| 4815270 | Detachable link chain A transmission or conveyor chain composed of a plurality of interconnected identical links which are attachable and detachable without need for pivot pins or other separate connecting hardware. Each link is preferably molded as a unitary structure of plas... | 03/28/1989 |
| 4710153 | Link chain An elongated link chain includes a plurality of hingedly connected chain links. Each of such links includes two lateral walls extending in the longitudinal direction of the chain and spaced from one another transversely of the chain. There are further pro... | 12/01/1987 |
| 4597747 | Detachable link chain A transmission or conveyor chain composed of a plurality of interconnected identical links which are attachable and detachable without need for pivot pins or other separate connecting hardware. Each link is preferably molded as a unitary structure of plas... | 07/01/1986 |
