Practice grenade
United States Patent 2817294
US Patent References:
/0485974.html
- - 0485974

/0682537.html
- - 0682537

Pyrotechnical device
- - 1610645

Pyrotechnic device
- - 2034976

Repeating candle
- - 2079008


Inventors:
Kristoffer, Hjellnes
Publication Date:
12/24/1957
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Assignee:
Kristoffer, Hjellnes
Primary Class:
102/361
Other Classes:
102/498
International Classes:
F42B8/26; F42B8/00