Buoys – rafts – and aquatic devices – Buoyancy underwater viewing device
Reexamination Certificate
2011-04-19
2011-04-19
Olson, Lars A (Department: 3617)
Buoys, rafts, and aquatic devices
Buoyancy underwater viewing device
C114S066000
Reexamination Certificate
active
07927164
ABSTRACT:
An underwater viewing unit includes a tube insertable into a through-hole of an air mattress, a rest for the viewer's head provided at the lower end of the tube, and a transparent panedisposed within the tube. The head rest is formed by an inflatable beaded body connected to the upper rim of the tube and extending over less than 360° to leave free a peripheral region outside the tube for free breathing.
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Barnes & Thornburg LLP
Olson Lars A
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