Section 735. Manner of service; filing; when service complete

1.  Service
  of the notice of petition and  petition  shall  be  made  by  personally
  delivering  them  to  the  respondent;  or  by delivering to and leaving
  personally with a person of suitable age and discretion who  resides  or
  is employed at the property sought to be recovered, a copy of the notice
  of  petition and petition, if upon reasonable application admittance can
  be obtained and such person found who will receive it; or if  admittance
  cannot  be  obtained  and  such  person found, by affixing a copy of the
  notice and petition upon a conspicuous part of the property sought to be
  recovered or placing a copy under the entrance door  of  such  premises;
  and  in  addition, within one day after such delivering to such suitable
  person or such affixing or placement, by mailing to the respondent  both
  by registered or certified mail and by regular first class mail,
    (a)  if  a  natural  person,  as follows: at the property sought to be
  recovered, and if such property is not the place of  residence  of  such
  person  and  if  the  petitioner  shall  have written information of the
  residence address of such person, at the last residence  address  as  to
  which  the  petitioner  has such information, or if the petitioner shall
  have no such information, but shall  have  written  information  of  the
  place  of business or employment of such person, to the last business or
  employment address as to which the petitioner has such information; and
    (b) if a corporation, joint-stock or other unincorporated association,
  as follows: at the property sought to be recovered, and if the principal
  office or principal place of business of such corporation,  joint  stock
  or  other  unincorporated  association  is  not  located on the property
  sought to be  recovered,  and  if  the  petitioner  shall  have  written
  information  of  the  principal  office  or  principal place of business
  within the state, at the last place as  to  which  petitioner  has  such
  information,  or  if  the  petitioner shall have no such information but
  shall have written information of any office or place of business within
  the state, to any such  place  as  to  which  the  petitioner  has  such
  information.    Allegations  as  to  such  information as may affect the
  mailing address shall be set forth either  in  the  petition,  or  in  a
  separate affidavit and filed as part of the proof of service.
    2.  The  notice  of  petition,  or  order  to show cause, and petition
  together with proof of service thereof shall be filed with the court  or
  clerk thereof within three days after;
    (a)  personal  delivery  to  respondent, when service has been made by
  that means, and such service shall be  complete  immediately  upon  such
  personal delivery; or
    (b)  mailing  to  respondent, when service is made by the alternatives
  above provided, and such service shall be complete upon  the  filing  of
  proof of service.