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Photograph 113800 Second World War, 1939-1945SYDNEY, NSW. 1945-07-11. MR A. R. CAVINIE OF GRANVILLE, NSW, THE INVENTOR OF THE "OZONE VARIABLE PITCH PROPELLER" SUBMITTED TO THE AUSTRALIAN ARMY INVENTIONS DIRECTORATE, 117 PITT STREET.

The Australian War Memorial Collection. Test site
SYDNEY, NSW. 1945-07-11. THE CONTROL LEVER ASSEMBLY FOR THE "OZONE VARIABLE PITCH PROPELLER" (MARINE), IN THE REVERSE POSITION, ON DISPLAY AT THE AUSTRALIAN ARMY INVENTIONS DIRECTORATE, 117 PITT STREET.
SYDNEY, NSW. 1945-07-11. MR A. R. CAVINIE OF GRANVILLE, NSW, THE INVENTOR OF THE "OZONE VARIABLE PITCH PROPELLER" SUBMITTED TO THE AUSTRALIAN ARMY INVENTIONS DIRECTORATE, 117 PITT STREET.

WAVERLY, SYDNEY, NEW SOUTH WALES. 1945-04-04. A NEW TYPE OF JACK UNDER CONSIDERATION AT THE ARMY INVENTIONS DIRECTORATE, 117 PITT STREET.

SYDNEY, NSW. 1945-01-26. SAMPLES AT THE ARMY INVENTIONS DIRECTORATE, MERCHANTILE BUILDINGS, 112 PITT STREET, INDICATING VARIOUS SAMPLES FITTED WITH A SINOUS CURVE TYPE SLIDING FASTENER.

SYDNEY, NSW. 1945-01-26. MODELS AT THE ARMY INVENTIONS DIRECTORATE, MERCHATILE MUTUAL BUILDINGS, 112 PITT STREET, INDICATING THE WORKING PRINCIPLE OF A SINOUS CURVE TYPE SLIDING FASTENER.

SYDNEY, NSW. 1945-01-29. A SURGICAL EQUIPMENT BAG AT THE ARMY INVENTIONS DIRECTORATE, MERCHANTILE MUTUAL BUILDINGS, 112 PITT STREET, FITTED WITH A NEW TYPE SLIDING FASTENER WITH SINOUS CURVE.

MELBOURNE, VICTORIA. 1945-11-13. AN EXHIBITION OF MILITARY INVENTIONS HELD AT THE ARMY INVENTIONS DIRECTORATE IN SPRING STREET. SHOWN HERE IS A MANNEQUIN SET UP TO DISPLAY A COGRAPH MAPPING MACHINE (P
