United States Patent 2770854
US Patent References:
/0106773.html
- - 0106773

/0236889.html
- - 0236889

/1047416.html
- - 1047416

Insecticide
- - 1507434

Incense burner
- - 1609814


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Primary Class:
424/40
Other Classes:
44/522, 422/126
US Patent References:
1866931Charcoal block
1959472Charcoal briquette
1973958
2465474Fragrance emitting device