Declension table of ?siddhapātra

Masculine	Singular	Dual	Plural
Nominative	siddhapātraḥ	siddhapātrau	siddhapātrāḥ
Vocative	siddhapātra	siddhapātrau	siddhapātrāḥ
Accusative	siddhapātram	siddhapātrau	siddhapātrān
Instrumental	siddhapātreṇa	siddhapātrābhyām	siddhapātraiḥ siddhapātrebhiḥ
Dative	siddhapātrāya	siddhapātrābhyām	siddhapātrebhyaḥ
Ablative	siddhapātrāt	siddhapātrābhyām	siddhapātrebhyaḥ
Genitive	siddhapātrasya	siddhapātrayoḥ	siddhapātrāṇām
Locative	siddhapātre	siddhapātrayoḥ	siddhapātreṣu

Compound siddhapātra -

Adverb -siddhapātram -siddhapātrāt