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   serbian 
 

Patents


The list of Pupin's patents announced in USA:

1.
No. 519 346 announced
8.5.1894.
Machines for phone and telegraph transmission.
2.
No. 519 347 announced
8.5.1894.
Transformator for telegraph, telephone and other electrical systems.
3.
No. 640 515 announced
2.1.1900.
Transferring technics of the electrical energy with alternate currents.
4.
No. 640 516 announced
2.1.1900.
Electrical transmission with resonant current circle.
5.
No. 652 230 announced
19.6.1900.
Lowernig technics of the electrical waves weakness and machines for it.
6.
No. 652 231 announced
19.6.1900.
Lowernig method of the electrical waves weakness and machines for it.
7.
No. 697 660 announced
15.4.1902.
Rolling up machine.
8.
No. 707 007 announced
12.8.1902.
Multiple telegraphy.
9.
No. 707 008 announced
12.8.1902.
Multiple telegraphy.
10.
No. 713 044 announced
4.11.1902.
Producing of the asimetrical currents with simetrical electromotorical process.
11.
No. 768 301 announced
23.8.1904.
Wireless electrical sygnal transmitting.
12.
Br. 761 995 objavljen 7.6.1904. Machine for lowering of the electrical waves weakening.
13.
No. 1.334 165 announced
16.3.1920.
Electrical waves transmitting.
14.
No. 1.336 378 announced
6.4.1920.
Antena with distributed positive resistance.
15.
No. 1.388 877 announced
3.12.1921.
Sound-generator
16.
No. 1.388 441 announced 23.12.1921. Multiple antena for transmission of the electrical waves.
17.
No. 1.415 845 announced
9.5.1922.
Selective impedance which is opposed to received electrical oscilations.
18.
No. 1.416 061 announced
10.5.1922.
High-selectivity radioreceiving system
19.
No. 1.456 909 announced
29.5.1922.
Wave-transmitter
20.
No. 1.452 833 announced
24.4.1923.
Machine for selective strenghtening
21.
No. 1.446 769 announced
23.2.1923.
Aperiodical pilot transmitter
22.
No. 1.488 514 announced 1.4.1923. Machine for selective strenghtening
23.
No. 1.494 893 announced 29.5.1923. Electrical agreement
24.
No. 1.502 875 announced 29.4.1923. Radiophone receiver

20 more patents were discovered afterwards.

 
 

The Mihajlo Pupin's born house is completly reconstructed and conservated for the anniversary. [further]