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In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 4340626 | Diffusion pumping apparatus self-inflating device An elastomeric enclosure is initially inflated to a desired pressure by a gas having large molecules incapable of diffusing outwardly from the enclosure, except at a relatively slow rate. When the enclosure is surrounded by ambient air at atmospheric pres... | 07/20/1982 |
| 4325194 | Sport shoe sole A sport shoe sole having a ground sole rigid and of excellent abrasion resistance and an elastic interlayer body bonded to the ground sole, in which the interlayer body is provided at its heel portion with an air inclusion means such as grooves and apertu... | 04/20/1982 |
| 4322891 | Sport shoe sole A sport shoe sole having a ground sole rigid and of excellent abrasion resistance and an elastic interlayer body bonded to the ground sole, in which the interlayer body is provided at its heel portion with an air inclusion means such as grooves and apertu... | 04/06/1982 |
| 4322892 | Sport shoe sole A sport shoe sole having a ground sole rigid and of excellent abrasion resistance and an elastic interlayer body bonded to the ground sole, in which the interlayer body is provided at its heel portion with an air inclusion means such as grooves and apertu... | 04/06/1982 |
| 4262433 | Sole body for footwear A sole body for footwear including a longitudinally extending body having an upturned fore part extending rearwardly from the front end of the sole body which terminates in a front groove extending transversely of and in the bottom thereof. A central rock... | 04/21/1981 |
| 4237625 | Thrust producing shoe sole and heel A thrust producing shoe sole and heel having fluid-proof cavities respectively located in the heel portion and in the sole portion which underlies the metatarsal ball area of a foot for which the sole and heel is sized, the two cavities being connected by... | 12/09/1980 |
| 4236326 | Sport shoe sole A sport shoe sole having a ground sole rigid and of excellent abrasion resistance and an elastic interlayer body bonded to the ground sole, in which the interlayer body is provided at its heel portion with an air inclusion means such as grooves and apertu... | 12/02/1980 |
| 4223457 | Heel shock absorber for footwear Heel supporting and cushioning member for footwear controlling the movement of foot/leg muscles in the form of removable, preferably disposable heel and foot shock absorber comprising a pliable coil filled with an elastomeric material resiliently flexing ... | 09/23/1980 |
