Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 6138669 | Dosage counter for metered dose inhaler (MDI) systems using a miniature pressure sensor A method and apparatus for directly counting the number of doses expended from a Metered Dose Inhaler (MDI) medicinal delivery system. A miniature pressure sensor and microprocessor is used to detect the pressure pulse in the transfer channel of the mouth... | 10/31/2000 |
| 5676129 | Dosage counter for metered dose inhaler (MDI) systems using a miniature pressure sensor A method and apparatus for directly counting the number of doses expended from a Metered Dose Inhaler (MDI) medicinal delivery system. A miniature pressure sensor and microprocessor is used to detect the pressure pulse in the transfer channel of the mouth... | 10/14/1997 |
