
luten aark

ack luten aark pulon key liye ack patent concreet aark design haye, jise daniel bee dwara design kiya gayaa haye. lutan, indianapolis kaa. luten aark design mein sudhaar key liye unhein 30 seey adhik patent seey sammaanit kiya gayaa thaa.
pull parr bhaar key tanaav koo door karane key liye aavashyak sudridhikaran key ranneetik upayog dwara pichhale concreet aark designs parr luten aark mein sudhaar hotaa haye. isase pull kaafee halke hoe jaate hain.
luten brij company designs kii ack vikreta thee. topeka pull aur loha company. way designs key paschimi vikreta they. 
luten key anusaar, 1919 taka unhone 17,000 seey adhik luten aark pulon kaa design kiya thaa, aur teen americi raajyon koo chhodkar sabhi mein udaaharan they.

