1. 5 SIMPLE INVENTIONS ( MUSKET ... )

    5 SIMPLE INVENTIONS ( MUSKET ... )

    8
    4
    74
    1
  2. 3 SIMPLE INVENTIONS ( ANTI-THEFT DOOR ALARM ...)

    3 SIMPLE INVENTIONS ( ANTI-THEFT DOOR ALARM ...)

    295
    112
    388
  3. 3 SIMPLE INVENTIONS ( REMOTE CONTROL VACUUM CLEANER ...)

    3 SIMPLE INVENTIONS ( REMOTE CONTROL VACUUM CLEANER ...)

    6
    2
    18
  4. 3 SIMPLE INVENTIONS ( MINIATURE CHAINSAW....)

    3 SIMPLE INVENTIONS ( MINIATURE CHAINSAW....)

    255
    93
    365
    1
  5. 3 SIMPLE INVENTIONS ( SOLAR LIGHT...)

    3 SIMPLE INVENTIONS ( SOLAR LIGHT...)

    186
    73
    245
  6. 5 SIMPLE INVENTIONS ( LAUNCHER ...)

    5 SIMPLE INVENTIONS ( LAUNCHER ...)

    126
    48
    217
  7. Simple and useful inventions

    Simple and useful inventions

    2
  8. Simple but amazing inventions

    Simple but amazing inventions

    35
  9. 3 SIMPLE INVENTIONS ( CABINET LIGHTING ...)

    3 SIMPLE INVENTIONS ( CABINET LIGHTING ...)

    31
    8
    75
  10. 3 SIMPLE INVENTIONS ( COIN CLASSIFICATION MACHINE ...)

    3 SIMPLE INVENTIONS ( COIN CLASSIFICATION MACHINE ...)

    29
    10
    47
  11. 3 SIMPLE INVENTIONS ( BLUETOOTH SPEAKER ...)

    3 SIMPLE INVENTIONS ( BLUETOOTH SPEAKER ...)

    23
    10
    80
    1
  12. 3 SIMPLE INVENTIONS ( WINDMILL SAW ...)

    3 SIMPLE INVENTIONS ( WINDMILL SAW ...)

    26
    12
    37
  13. 3 SIMPLE INVENTIONS ( MICRO CLEANER ...)

    3 SIMPLE INVENTIONS ( MICRO CLEANER ...)

    19
    9
    69
  14. 3 SIMPLE INVENTIONS ( WIRELESS SWITCH ... )

    3 SIMPLE INVENTIONS ( WIRELESS SWITCH ... )

    21
    8
    35
  15. 3 SIMPLE INVENTIONS ( ETCH MACHINES ... )

    3 SIMPLE INVENTIONS ( ETCH MACHINES ... )

    24
    15
    77
  16. 3 SIMPLE INVENTIONS ( MINIATURE VACUUM CLEANER ...)

    3 SIMPLE INVENTIONS ( MINIATURE VACUUM CLEANER ...)

    16
    6
    77
  17. 5 SIMPLE INVENTIONS ( AUTOMATIC FEEDING MACHINE ...)

    5 SIMPLE INVENTIONS ( AUTOMATIC FEEDING MACHINE ...)

    23
    10
    43
  18. 3 SIMPLE INVENTIONS ( MINIATURE POLISHER ...)

    3 SIMPLE INVENTIONS ( MINIATURE POLISHER ...)

    16
    6
    31
  19. 3 SIMPLE INVENTIONS ( ELECTRIC TOOTHBRUSH ...)

    3 SIMPLE INVENTIONS ( ELECTRIC TOOTHBRUSH ...)

    15
    7
    33