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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
DETNET SOUTH AFRICA (PTY) LTD	2191 JOHANNESBURG

International Classification(s)

• F42D:BLASTING
• F42C:AMMUNITION FUZES

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Birkin, Christopher Malcolm	Centurion, ZA	21	51
Koekemoer, Andre Louis	Boksburg, ZA	25	89
Kruger, Michiel Jacobus	Johannesburg, ZA	27	19
Maurissens, Daniel Auguste	Orbe, CH	13	1
Michna, Richard Joseph	Barkhamsted, US	14	10

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Sep 17, 2025
7.5 Year Payment	$3600.00	$1800.00	$900.00	Sep 17, 2029
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Sep 17, 2033

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent Application No: 2022/0082,362

METHOD OF VALIDATING A SHOCK TUBE EVENT

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