| Patent #: | 159524
Read More |  |
| Inventor: | Borzo, Karel |
| Invention: | Motor Controller |
| Location: | Calgary |
| Date: | 15/12/14 |
| Category: | Sound Communication Equipment |
| | |
| Patent #: | 530667
Read More |  |
| Inventor: | Carlson, Carl V. |
| Invention: | Volume Range Compression Amplifier Circuit |
| Location: | Calgary |
| Date: | 25/09/56 |
| Category: | Sound Communication Equipment |
| | |
| Patent #: | 274327
Read More |  |
| Inventor: | Davidson, Alexander Roy |
| Invention: | Phonograph Record Rotating Mechanism |
| Location: | Edmonton |
| Date: | 04/10/27 |
| Category: | Sound Communication Equipment |
| Comments: | see Edmonton Journal, April 29, 1930; b Scotland; came to Canada age 17; 1882 came west as member of RNWMP; m Isabella Fraser; homesteaded in Calder after 1890 |
| | |
| Patent #: | 601734
Read More |  |
| Inventor: | Graham, Robert |
| Invention: | Continuous Recorder |
| Location: | Bowness |
| Date: | 12/07/60 |
| Category: | Sound Communication Equipment |
| | |
| Patent #: | 623869
Read More |  |
| Inventor: | Graham, Robert |
| Invention: | Recording Devices |
| Location: | Bowness |
| Date: | 18/07/61 |
| Category: | Sound Communication Equipment |
| | |
| Patent #: | 157013
Read More |  |
| Inventor: | Harbeke, Louis N. |
| Invention: | Gramophone Mechanism |
| Location: | Macleod |
| Date: | 21/07/14 |
| Category: | Sound Communication Equipment |
| | |
| Patent #: | 689068
Read More |  |
| Inventor: | Kostyk, Allen F. |
| Invention: | Sound Producing Apparatus for Toys and the Like |
| Location: | Edmonton |
| Date: | 23/06/64 |
| Category: | Sound Communication Equipment; 8: Toy |
| | |
| Patent #: | 288381
Read More |  |
| Inventor: | Laing, George |
| Invention: | Musical Instrument Device |
| Location: | Calgary |
| Date: | 02/04/29 |
| Category: | Sound Communication Equipment |
| | |
| Patent #: | 198971
Read More |  |
| Inventor: | Masse, Thomas J. |
| Invention: | Indicator for Spring Motors |
| Location: | Edmonton |
| Date: | 06/04/20 |
| Category: | Sound Communication Equipment |
| | |
| Patent #: | 531648
Read More |  |
| Inventor: | Melnychuk, Nick G. |
| Invention: | Audio Speed Warning Device |
| Location: | Beverly |
| Date: | 16/10/56 |
| Category: | Sound Communication Equipment |
| | |
| Patent #: | 601734
Read More | |
| Inventor: | Precision Oilfield Services Ltd. |
| Invention: | Continuous Recorder |
| Location: | Edmonton |
| Date: | 12/07/60 |
| Category: | Sound Communication Equipment |
| | |
| Patent #: | 531648
Read More | |
| Inventor: | Randall, Lloyd W. |
| Invention: | Audio Speed Warning Device |
| Location: | Sedgewick |
| Date: | 16/10/56 |
| Category: | Sound Communication Equipment |
| | |
| Patent #: | 303779
Read More |  |
| Inventor: | Stevens, Robert Herbert |
| Invention: | Apparatus for the Filtration of Radio Wave Signals |
| Location: | Edmonton |
| Date: | 09/09/30 |
| Category: | Sound Communication Equipment |
| | |
| Patent #: | 657870
Read More |  |
| Inventor: | Watson, Richard |
| Invention: | Telephone Dial Insert |
| Location: | Calgary |
| Date: | 19/02/63 |
| Category: | Sound Communication Equipment |
| | |
Heritage Community Foundation Presentss
