Indian Patent Application Search Online Database

Those looking for patent applications from India or granted patent to Indian applications can look for them here -
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This website is under the control of Government of India's Controller general of patents designs and trademarks Office handled by the Department of industrial policy and promotion under the Ministry of commerce and industry.
This question was raised to me after reading a query here: #-Link-Snipped-# about searching Indian patents online.

Following document can help you search patents with appropriate search categories -