Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 4872179 | Laser apparatus with a multipass resonator A laser device includes a multipass resonator which has, in the beam path between two resonator end mirrors, at least two opposite beam folding mirrors with confronting mirror surfaces. At least one of the beam folding mirrors is limited in its width and ... | 10/03/1989 |
| 4752937 | Gas laser and production process therefor A gas laser has a coolable inner electrode for connection to a radio-frequency power source and a coolable outer electrode that is coaxial with and radially spaced from the inner electrode with an excitation space containing the gas to be excited in the r... | 06/21/1988 |
| 4744091 | Mirror assembly for gas laser A gas laser has (1) a reflecting body with a reflecting surface, (2) excitation space structure cooperative with the reflecting body for defining an excitation space which is open opposite the reflecting surface of the reflecting body, (3) devices for las... | 05/10/1988 |