| Number | Name | Date | Kind |
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| 4813149 | Herkimer | Mar 1989 | A |
| D432928 | Garrett | Oct 2000 | S |
| 6334261 | Scillia | Jan 2002 | B1 |
| RE38032 | Butwin | Mar 2003 | E |
| 8122609 | Farr | Feb 2012 | B2 |
| 8782914 | DeLuca | Jul 2014 | B1 |
| 9185895 | Miatkowski | Nov 2015 | B1 |
| D850948 | Zhan | Jun 2019 | S |
| D933506 | Kurani | Oct 2021 | S |
| 20160025475 | Neugärtner | Jan 2016 | A1 |
| 20160370162 | Squiers | Dec 2016 | A1 |
| 20180201050 | Rosenfield | Jul 2018 | A1 |
| 20200149856 | Miller | May 2020 | A1 |
| Number | Date | Country |
|---|---|---|
| 304523622 | Aug 2017 | CN |
| 304503893 | Sep 2017 | CN |
| 305852849 | Oct 2020 | CN |
| 306978012 | Jul 2021 | CN |
| 307291764 | Jan 2022 | CN |
| Entry |
|---|
| Palmgren,CH Hanson 45EX 4 inch ×4 inch Layout Triangle with 45 Degree Angle, Date first available Nov. 8, 1999,[online] retrieved Jul. 28, 2022,available from https://www.amazon.com/Hanson-45EX-Layout-Triangle-Degree/dp/B00002253S/ref=asc_df_B00002253S/?tag=hyprod-20&linkCode=df0&hvadid=242023504538&hv (Year: 1999). |
| Palmgren, Folding Layout Asquare-3′×4′×5′ 90° 3Pcs.,Date first available May 10, 2000,[online]retrieved Jul. 28, 2022,available from https://www.amazon.com/CH-Hanson-Aluminum-Folding-Asquare/dp/B00004TKDP/ref=pd_bxgy_img_sccl_1/144-0090457-0750976?pd_rd_w=asYx4&content-id=amzn1.sym.7757a8b5-874e-4a67-9d85- (Year: 2000). |
| Oumefar, L-Shaped Framing Square Stainless Steel, Date first available Sep. 4, 2020,[online]retrieved Jul. 28, 2022,available from https://www.amazon.com/dp/B08HH7BX7Y/ref=sspa_dk_detail_4?psc=1&pf_rd_p=3be1c5b9-5b41-4830-a902-fa8556c19eb5&pf_rd_r=BTMXDCR7MNCKKHS91MQE&pd_rd_wg=5MqXc&pd_rd_w=gG2sq&cont (Year: 2020). |