...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 5917331 | Integrated circuit test method and structure A power supply for testing an integrated circuit includes a source voltage input terminal for receiving an input voltage. A plurality of switches are coupled in parallel to the input terminal, where each of the switches is coupled to an associated resisto... | 06/29/1999 |
| 5773990 | Integrated circuit test power supply A power supply for testing an integrated circuit includes a source voltage input terminal for receiving an input voltage. The power supply serves as both a DUT active power supply and an IDDQ measurement circuit, without the need for switching between sep... | 06/30/1998 |
| 5606568 | Method and apparatus for performing serial and parallel scan testing on an integrated circuit An integrated circuit test apparatus according to an exemplary embodiment includes a first memory section configured to store processor procedures and a second memory section configured to simultaneously store parallel integrated circuit test vectors and ... | 02/25/1997 |
| 5521493 | Semiconductor test system including a novel driver/load circuit A novel pin electronics design and method is taught which serves to minimize the capacitive loading of the driver and load portion of the pin electronics. The driver and load circuitry are combined to form a novel driver/load circuit, thereby reducing cap... | 05/28/1996 |
| 4809221 | Timing signal generator A unique timing system is provided which allows for a user to program timing events with variable periods and edges from a fixed frequency clock, and having resolution greater than that of the fixed reference frequency. Delay elements, which are inherentl... | 02/28/1989 |
| 4806852 | Automatic test system with enhanced performance of timing generators A unique automatic test system (100) is provided in which timing signals are generated in a novel manner as compared with prior art test systems. All adjustments for propagation delays of timing signals are made in a digital fashion, by adjusting the digi... | 02/21/1989 |
| 4779221 | Timing signal generator A unique timing system is provided which allows for a user to program timing events with variable periods and edges from a fixed frequency clock, and having resolution greater than that of the fixed reference frequency. Delay elements, which are inherentl... | 10/18/1988 |