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Sir William Preece, chief engineer, British Post Office ; 1878
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| Number | Title | Issue Date |
| 4429874 | Game racquet frame A composite racquetball racquet comprises a molded synthetic plastic frame member on which is adhesively bonded a generally U-shaped channel and a synthetic plastic bumper strip is adhesively bonded over the channel outer periphery at the outer head porti... | 02/07/1984 |
| 4331331 | Game racquet and method of making A composite racquetball racquet comprises a molded synthetic plastic frame member on which is adhesively bonded a generally U-shaped channel and a synthetic plastic bumper strip is adhesively bonded over the channel outer periphery at the outer head porti... | 05/25/1982 |
| 4314699 | Game racquet A game racquet has a composite metal-plastic frame intermediately defining a head and having opposite ends within a handle, there being external plastic strips laterally located on the head, a wide strip around the outer part of the head and narrower stri... | 02/09/1982 |
| 4280699 | Game racquet A game racquet having a metal frame member that is of greatest size in the outer head region for increased weight there and which at opposite sides of the head is of stepped successively decreasing size toward the racquet handle, the throat region being r... | 07/28/1981 |
| 4265450 | Metal racketball rackets A racketball racket comprises a metal frame in the form of a single strip of metal of substantially uniform cross-section bent intermedially to provide a head portion that defines the striking area and merges through a reversely curved throat portion to s... | 05/05/1981 |
