Dear Querist
my opinion on your queries are as under
1. what are the legal procedures I can take against him?
You can file a domestic violence case against him, if any dowry demand then file a criminal case u/s 498A of IPC and 323/324 as per your photographs.
2. can I get maintenance when he is working in US?
Opinion: yes you can get maintenance from him if you are unable to maintain yourself.
3. What are the legal procedures to get him back to India? how long will it take?
Opinion: after filing case the court or police summon him, time can not be specify.
4. photo without medical proof... legal evidence or not?
opinion: photos are admissible as evidence
5. can he simultaneously file a divorce case in US?
opinion: no he can not file divorce case till the final disposal of this case.
6. can he get the annulment without coming to India?
Opinion: no its is not possible