4. Stoves and furnaces
  5. Heaters
  6. Surface

National Patent Development Corp.

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Apparatus for tinting soft contact lenses

Coating apparatus – Program – cyclic – or time control – Having timer
Patent

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Disposable tint pack assembly for contact lens tinting

Dispensing – Collapsible wall-type container – Plural container and/or compartment
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Environmental coating solution

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
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Photosensitive diazonium compound containing composition and art

Radiation imagery chemistry: process – composition – or product th – Diazo reproduction – process – composition – or product – Composition or product which contains radiation sensitive...
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Solar collector

Stoves and furnaces – Heaters – Surface
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