USD378744S - Restriction indicator - Google Patents

Restriction indicator Download PDF

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Publication number
USD378744S
USD378744S US29/048,653 US4865396F USD378744S US D378744 S USD378744 S US D378744S US 4865396 F US4865396 F US 4865396F US D378744 S USD378744 S US D378744S
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US
United States
Prior art keywords
restriction indicator
restriction
indicator
ornamental design
view
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US29/048,653
Inventor
Kathleen A. Abrahamson
Thomas A. Boeckemann
James Efstrand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Donaldson Co Inc
Original Assignee
Donaldson Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Donaldson Co Inc filed Critical Donaldson Co Inc
Priority to US29/048,653 priority Critical patent/USD378744S/en
Assigned to DONALDSON COMPANY, INC. reassignment DONALDSON COMPANY, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ABRAHAMSON, KATHLEEN A., BOECKERMANN, THOMAS A., ELFSTRAND, JAMES
Application granted granted Critical
Publication of USD378744S publication Critical patent/USD378744S/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

FIG. 1 is a perspective view of a restriction indicator according to the present invention;
FIG. 2 is a top plan view of the restriction indicator shown in FIG. 1;
FIG. 3 is a side elevational view of the restriction indicator shown in FIG. 1; and,
FIG. 4 is a bottom plan view of the restriction indicator shown in FIG. 1.

Claims (1)

  1. The ornamental design for restriction indicator, as shown and described.
US29/048,653 1996-01-11 1996-01-11 Restriction indicator Expired - Lifetime USD378744S (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US29/048,653 USD378744S (en) 1996-01-11 1996-01-11 Restriction indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29/048,653 USD378744S (en) 1996-01-11 1996-01-11 Restriction indicator

Publications (1)

Publication Number Publication Date
USD378744S true USD378744S (en) 1997-04-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
US29/048,653 Expired - Lifetime USD378744S (en) 1996-01-11 1996-01-11 Restriction indicator

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US (1) USD378744S (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD551943S1 (en) * 2006-02-28 2007-10-02 The Gates Corporation Dual-mass damper
USD671201S1 (en) * 2010-06-15 2012-11-20 Nitto Denko Corporation Vent filter
USD672447S1 (en) * 2010-06-15 2012-12-11 Nitto Denko Corporation Vent cap
USD672857S1 (en) * 2010-06-15 2012-12-18 Nitto Denko Corporation Vent cap

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939457A (en) * 1974-11-07 1976-02-17 Richard Donald Nelson Air filter restriction indicating device
US4020783A (en) * 1975-06-19 1977-05-03 Donaldson Company, Inc. Air cleaner with restriction indicator
US4031847A (en) * 1976-04-21 1977-06-28 Donaldson Company, Inc. Pressure ratio reversal indicator
US4254731A (en) * 1978-05-24 1981-03-10 Engineering Components Limited Filter restriction indicator
US4445456A (en) * 1978-06-19 1984-05-01 Engineered Products Company Air filter restriction indicating device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939457A (en) * 1974-11-07 1976-02-17 Richard Donald Nelson Air filter restriction indicating device
US4020783A (en) * 1975-06-19 1977-05-03 Donaldson Company, Inc. Air cleaner with restriction indicator
US4031847A (en) * 1976-04-21 1977-06-28 Donaldson Company, Inc. Pressure ratio reversal indicator
US4254731A (en) * 1978-05-24 1981-03-10 Engineering Components Limited Filter restriction indicator
US4445456A (en) * 1978-06-19 1984-05-01 Engineered Products Company Air filter restriction indicating device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD551943S1 (en) * 2006-02-28 2007-10-02 The Gates Corporation Dual-mass damper
USD671201S1 (en) * 2010-06-15 2012-11-20 Nitto Denko Corporation Vent filter
USD672447S1 (en) * 2010-06-15 2012-12-11 Nitto Denko Corporation Vent cap
USD672857S1 (en) * 2010-06-15 2012-12-18 Nitto Denko Corporation Vent cap

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