Declension table of ?dṛṣatputra

Masculine	Singular	Dual	Plural
Nominative	dṛṣatputraḥ	dṛṣatputrau	dṛṣatputrāḥ
Vocative	dṛṣatputra	dṛṣatputrau	dṛṣatputrāḥ
Accusative	dṛṣatputram	dṛṣatputrau	dṛṣatputrān
Instrumental	dṛṣatputreṇa	dṛṣatputrābhyām	dṛṣatputraiḥ dṛṣatputrebhiḥ
Dative	dṛṣatputrāya	dṛṣatputrābhyām	dṛṣatputrebhyaḥ
Ablative	dṛṣatputrāt	dṛṣatputrābhyām	dṛṣatputrebhyaḥ
Genitive	dṛṣatputrasya	dṛṣatputrayoḥ	dṛṣatputrāṇām
Locative	dṛṣatputre	dṛṣatputrayoḥ	dṛṣatputreṣu

Compound dṛṣatputra -

Adverb -dṛṣatputram -dṛṣatputrāt