Size of this preview: 375 × 599 pixels. Other resolutions: 150 × 240 pixels | 300 × 480 pixels | 694 × 1,109 pixels.
Original file (694 × 1,109 pixels, file size: 202 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: Hallstrom refrigerators - Drawing from Australian patent No. 13,475-28. This patented design was used in Hallstrom's 'White Frost' range of manually recharged refrigerators. Its operating principle was similar to that of another refrigerating device known as an Icy Ball. Details of patent process are: Application dated 25th May 1928. Application and Provisional Specification Accepted 11th June 1928. Complete Specification Accepted 16th January 1929. Acceptance Advertised (Sec. 50) 29th January 1929. |
| Date | |
| Source | Australian patent No. 13,475/28. |
| Author | Margaret Elliot Hallstrom |
Licensing
|
This image or other work is of Australian origin and is now in the public domain because its term of copyright has expired. According to the Australian Copyright Council (ACC), ACC Information Sheet G023v19 (Duration of copyright) (January 2019).1
When using this template, please provide information of where the image was first published and who created it.  You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
|
 | ||||||||||||||||||
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:05, 7 April 2023 | | 694 × 1,109 (202 KB) | TrimmerinWiki | Uploaded a work by Margaret Elliot Hallstrom from Australian patent No. 13,475/28. with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
