US3581748A - Cigarette filter - Google Patents

Cigarette filter Download PDF

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Publication number
US3581748A
US3581748A US3581748DA US3581748A US 3581748 A US3581748 A US 3581748A US 3581748D A US3581748D A US 3581748DA US 3581748 A US3581748 A US 3581748A
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Grant
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Prior art keywords
smoke
baffle plate
filter
set forth
sleeve
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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
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Inventor
Joe Cameron
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INT AUTOMATED ELECTRONICS CORP
Original Assignee
INT AUTOMATED ELECTRONICS CORP
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    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Mouthpieces for cigars or cigarettes
    • A24D3/04Tobacco smoke filters characterised by their shape or structure
    • A24D3/045Tobacco smoke filters characterised by their shape or structure with smoke acceleration means, e.g. impact-filters

Abstract

A tobacco filter including a plurality of metallic foraminous plates for cooling smoke during passage therethrough. A baffle plate is inserted in the smoke stream for causing impinging contact between tobacco smoke and the baffle plate causing the depositing of tar thereon. Conical members are disposed on both sides of the baffle plate to cause acceleration of a smoke stream against the impinging surface of the baffle plate and deceleration of smoke flow on the other side of the baffle plate. Filtration is achieved by small granules of sandstone or gravel. The lip engaging portion of the cigarette filter includes a shredded paper end which is turned inwardly to provide further filtering.

Description

United States Patent [72] Inventor Joe Cameron Millbrook, Ala. 1211 Appl. No. 838,589 [22] Filed July 2, 1969 [45] Patented ,lune1,1971 [73] Assignee International Automated Electronics Corporation [54] CIGARETTE FILTER 7 Claims, 4 Drawing Figs.

[52] U.S. Cl 131/105, 131/10,13l/10.7,13l/l1,131/201,131/212, 131/261 [51] Int. Cl A24d 01/04, A24f01/08,A24f01/16 [50] Field of Search 131/103, 10A,11,10.5,10.7,261B,201,211,212,213

[56] References Cited UNITED STATES PATENTS 1,916,799 7/1933 Hughes 131/11 2,827,903 3/1958 Niederman. 131/10.5 2,954,783 10/1960 Lebert 131/187 3,167,076 1/1965 Mare 131/105 3,457,927 7/1969 Siragusa 131/201X 3,504,677 4/1970 Doppelt 131/10.5X FORElGN PATENTS 13,747 1851 Great Britain 131/207 1 23,412 1910 GreatBritainm. 131/212 1,047,594 11/1966 Great Britain 131/105 Primary Examiner-Aldrich F. Medbery Assistant Examiner-.1. F. Pittelli Attorney-Jennings, Carter & Thompson of the cigarette filter includes a shredded paper end which is turned inwardly to provide further filtering.

mama] m w. 3581.748

Jae Cameron IN VISN'IOK.

BY WM 3% CIGARETTE FILTER The present invention relates to cigarette filters including multiple elements.

In the past, a wide variety of cigarette filters have been devised and utilized. Generally, these filters include cellulose packing material or charcoal which absorbs a certain amount of irritants from the cigarette smoke passing through the filter. However, it has been found that as the filter becomes more effective, the quantity and strength of smoke inhaled by the smoker is decreased so that he does not realize smoking satisfaction obtainable from a cigarette without a filter. Further, conventional filters make no provision for reducing heat in the smoke which causes tongue bite.

The present invention includes multiple filtration and heat absorbing elements which absorbs a substantial amount of heat from passing smoke. Further, means are provided for reducing the tar content of the filtered smoke without diminishing the quality of inhaled smoke. Further, vent means are provided inthe filter for allowing smooth draw by the smoker.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIG. 1 is a perspective view illustrating a cigarette having the filter structure of the present invention.

FIG. 2 is a longitudinal sectional view taken along a plane passing along section line 2-2 of FIG. I exposing the interior components of the cigarette filter.

FIG. 3 is a transverse sectional view taken along a plane passing along section line 3-3 of FIG. 2.

FIG. 4 is an exploded view particularly illustrating the individual components which makeup the cigarette filter of the present invention.

Referring to FIG. 1, a cigarette is generally indicated by the numeral will be seen to include the filter structure of the present invention. However, it is to be emphasized that the filter structure per se may be constructed as an accessory into which plain cigarettes are inserted. Further, the cigarette structure may be incorporated in a mouthpiece for use with cigars. Still further, the filter may be included within the stern portion of a smoking pipe. However, for purposes of convenience the present discussion will be directed to incorporation of the filter structure in a cigarette.

The filter structure includes a paper sleeve 12 which extends over the entire length of the cigarette. As will be seen by referring to FIG. 2, the forward portion of the cigarette includes tobacco 14 which generates the smoke to be filtered by the filter components generally indicated by reference numeral IS. A disc-shaped foraminous metallic plate 16 is disposed at the inward end of the tobacco portion 114. As will be seen from FIG. 4, the disc includes apertures 18 therein to permit the passage of smoke therethrough. However, during such passage, a substantial quantity of heat is absorbed by the metallic plate thereby decreasing the effect of tongue bite experienced bythe smoker.

A conical member 20 fabricated form a suitable material such as plastic, paper, metal or the like includes an open base 22 and an aperture formed in the apex 24 thereof. The base 22 is disposed against the free surface of the foraminous plate 16. The cone functions as a means for accelerating the smoke stream as it passes through the foraminous plate 16. A baffle or deflection plate 25 is positioned in close proximity to the apex portion 24 of the conical member 20. The baffle plate 25 includes a disc-shaped portion 26 disposed in spaced parallel relation with the foraminous plate 16. Diametrically opposite apertures are formed along the periphery of the body portion 26 and elongated tubes 28 and 30, integrally attached to the body portion 16 extend coaxially parallel with the sleeve axis. As will be seen from FIG. 2, the apex portion 24 of the cone member 20 is positioned between the tubular elements 28 and 30 with sufficient space therebetween to allow the passage of accelerated smoke from the aperture in the apex portion 24 of the conical member 20 resulting in the impinging of this smoke on the disc body 26 of the baffle plate 25. As a result of this impinging action, tar from the smoke is deposited upon the body portion 26. The smoke is then free to flow through the tubular elements 28 and 30 for further passage through the filter.

A second conical member 32 is disposed on the opposite side of the baffle plate 25. As in the case of the first mentioned bafile plate, the baffle plate includes an aperture formed in the apex portion 34 thereof and an opened base 36. The conical portion 34 is positioned between the tubular elements 28 and 30 of the baffle plate in symmetrical relation with the first mentioned conical member 20. The second conical member decelerates the flow of smoke after the smoke exists from the tubular elements 28 and 30 of the baffie plate 25.

A second foraminous plate 38 having apertures 40 therein is identical to the first mentioned foraminous plate 16 and is positioned against the base 36 of the conical member 32 in the same manner as described in connection with the first mentioned foraminous plate 16.

To the terminal end of the filter structure, a plug of filtering material 42 is positioned in sleeve 12 and includes a first edge forming an interface with the free surface of foraminous plate 38. The plug is preferably fabricated from small granules of sandstone gravel which has been found to have superior filtering qualities as compared to cellulose, charcoal and other conventional materials. This is due to the sandstones capability to filter minute materials. However, instead of the sandstone granules, these conventional materials may be utilized. The outward end of thefiltering plug 42 forms an interface with a third foraminous plate 44 substantially identical to the aforementioned foraminous plates 38 and 116. The third foraminous plate 44 includes apertures 46 therein to permit the relatively easy draw of smoke therethrough.

The outward ends of sleeve 12 is longitudinally shreaded and the resulting strips are turned inwardly to further filter the smoke passing therethrough.

Circumferentially disposed vent holes 50 are formed in sleeve 12 at a point intermediate the base 22 and apex portion 24 of conical member 20. Inclusion of the tiny air vents will further cool and add oxygen to the smoke making for a more comfortable utilization of the tobacco product.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

I claim:

1. A tobacco filter device adapted to operate upon a flow stream of smoke comprising a filter portion enclosed within a sleeve section, at least one foraminous plate disposed in the sleeve section and oriented generally perpendicularly to the flow stream for absorbingheat therefrom, the plate having apertures therein to allow the passage of smoke therethrough, wherein the sleeve section further encloses two of said foraminous plates in parallel spaced relation, a baffle plate disposed intermediate the foraminous plates upon which a smoke stream impinges and deposits tar, channel means attached to the baffle plate for guiding the smoke stream through the baffle plate, and conical members opened at the base and apex portions thereof, the conical members being positioned adjacent the foraminous plates and convergingly positioned toward each other with the baffle plate interposed therebetween to cause acceleration of the smoke flow against one side of the baffle plate and deceleration of the flow upon exit from the channel means.

2. The filter structure set forth in claim I wherein the baffle plate comprises a discshaped web disposed perpendicularly to the smoke stream, the channel means being tubular elements attached at diametrically opposite points along the web perimeter, the tubular elements extending perpendicularly of the web and permitting the passage of smoke therethrough after impinging upon the web.

3. The filter structure set forth in claim 2 together with vent holes formed around the perimeter of the sleeve to permit the introduction of outside air into a space between a first encountered conical member and an associated surface of the baffle plate for efi'ecting the introduction of oxygen into the smoke and further causing the cooling thereof.

4. The structure set forth in claim 3 in which said filter portion comprises a plug of filtering material disposed in the sleeve for causing filtration of irritants from smoke passing

Claims (7)

1. A tobacco filter device adapted to operate upon a flow stream of smoke comprising a filter portion enclosed within a sleeve section, at least one foraminous plate disposed in the sleeve section and oriented generally perpendicularly to the flow stream for absorbing heat therefrom, the plate having apertures therein to allow the passage of smoke therethrough, wherein the sleeve section further encloses two of said foraminous plates in parallel spaced relation, a baffle plate disposed intermediate the foraminous plates upon which a smoke stream impinges and deposits tar, channel means attached to the baffle plate for guiding the smoke stream through the baffle plate, and conical members opened at the base and apex portions thereof, the conical members being positioned adjacent the foraminous plates and convergingly positioned toward each other with the baffle plate interposed therebetween to cause acceleration of the smoke flow against one side of the baffle plate and deceleration of the flow upon exit from the channel means.
2. The filter structure set forth in claim 1 wherein the baffle plate comprises a disc-shaped web disposed perpendicularly to the smoke stream, the channel means being tubular elements attached at diametrically opposite points along the web perimeter, the tubular elements extending perpendicularly of the web and permitting the passage of smoke therethrough after impinging upon the web.
3. The filter structure set forth in claim 2 together with vent holes formed around the perimeter of the sleeve to permit the introduction of outside air into a space between a first encountered conical member and an associated surface of the baffle plate for effecting the introduction of oxygen into the smoke and further causing the cooling thereof.
4. The structure set forth in claim 3 in which said filter portion comprises a plug of filtering material disposed in the sleeve for causing filtration of irritants from smoke passing therethrough.
5. The filter structure set forth in claim 4 wherein the filtering plug comprises relatively small granules of sandstone gravel.
6. The filter structure set forth in claim 5 together with an additional foraminous plate disposed immediately inwardly of the lip engaging end of said sleeve for causing additional cooling of the smoke delivered to a smoker.
7. The filter structure set forth in claim 6 wherein the lip engaging portion of the sleeve section is shredded and includes inwardly turned shredded strips to effect additional filtering of smoke delivered to the smoker.
US3581748A 1969-07-02 1969-07-02 Cigarette filter Expired - Lifetime US3581748A (en)

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Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777765A (en) * 1971-08-05 1973-12-11 Yoshinaga Prince Co Ltd Filter apparatus for removing tar and other deleterious substances from tobacco smoke
US4043776A (en) * 1974-07-15 1977-08-23 Orel Jeannette V Smoke sorbing device
US4146040A (en) * 1977-03-17 1979-03-27 Cohn Charles C Cigarettes
US4452259A (en) * 1981-07-10 1984-06-05 Loews Theatres, Inc. Smoking articles having a reduced free burn time
GB2137067A (en) * 1983-03-25 1984-10-03 Brown & Williamson Tobacco Ventilated filter and smoke dispersing mouthpiece
US5113878A (en) * 1989-07-13 1992-05-19 Pasquale Polese Cigarette-holder including a filter, suitable to wean smokers from the habit of smoking
DE3153420C2 (en) * 1980-05-01 1992-12-24 British-American Tobacco Co. Ltd., London, Gb
US6502580B1 (en) * 1997-09-23 2003-01-07 Alessandro Leonetti Luparini Hypobaric cigarette filter device
US20070186945A1 (en) * 2005-12-29 2007-08-16 Philip Morris Usa Inc. Smoking article with improved delivery profile
US20080017204A1 (en) * 2006-07-12 2008-01-24 Philip Morris Usa Inc. Smoking article with impaction filter segment
US20080035162A1 (en) * 2006-08-08 2008-02-14 Philip Morris Usa Inc. Smoking article with single piece restrictor and chamber
US20080163877A1 (en) * 2006-12-29 2008-07-10 Philip Morris Usa Inc. Smoking article with concentric hollow core in tobacco rod and capsule containing flavorant and aerosol forming agents in the filter system
US20080216848A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking article filter with annular restrictor and downstream ventilation
US20080216851A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking articles with restrictor and aerosol former
US20080216853A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking article with open ended filter and restrictor
US20080216850A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Restrictor attachment for unfiltered smoking article
US20100059075A1 (en) * 2008-09-09 2010-03-11 Steve Woodson Ventilated smoking material perforation apparatus and method
US20100059072A1 (en) * 2008-09-09 2010-03-11 Steve Woodson Ventilated smoking material perforation apparatus, method and product
US7878963B2 (en) 2006-03-28 2011-02-01 Philip Morris Usa Inc. Smoking article with a restrictor
US20110083687A1 (en) * 2009-10-09 2011-04-14 Philip Morris Usa Inc. Cigarette filter to reduce smoke deliveries in later puffs
US20110083675A1 (en) * 2009-10-09 2011-04-14 Philip Morris Usa Inc. Smoking article with valved restrictor
US20110088704A1 (en) * 2009-10-15 2011-04-21 Philip Morris Usa Inc. Enhanced subjective activated carbon cigarette
US7987856B2 (en) 2005-12-29 2011-08-02 Philip Morris Usa Inc. Smoking article with bypass channel
US8434499B2 (en) 2009-10-09 2013-05-07 Philip Morris Usa Inc. Filter design for improving sensory profile of carbon filter-tipped smoking articles
JP2014528711A (en) * 2011-09-09 2014-10-30 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム Smoking article filter comprising flow restricting elements and the cavity
US9138016B2 (en) 2010-03-26 2015-09-22 Philip Morris Usa Inc. Smoking articles with significantly reduced gas vapor phase smoking constituents
CN105105331A (en) * 2015-09-22 2015-12-02 浙江凯实激光科技股份有限公司 Built-in type smoke purifying filter
US9848656B2 (en) 2012-01-31 2017-12-26 Altria Client Services Llc Electronic cigarette

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191023412A (en) * 1910-10-10 1911-10-05 William Monks Improvements in Tobacco Pipes.
US1916799A (en) * 1932-02-18 1933-07-04 James F Hughes Mouthplece for cigarettes
US2827903A (en) * 1956-02-13 1958-03-25 Niederman Henry Self cooling filter cigarette
US2954783A (en) * 1958-06-12 1960-10-04 Mac Farland Aveyard & Company Filter type tobacco smoking structure for removal of tar
US3167076A (en) * 1959-12-09 1965-01-26 Mare Ernest Filter tipped cigarettes
GB1047594A (en) * 1962-07-30 1966-11-09 Stanley Balfour Lynn Improvements in cigarette filters
US3457927A (en) * 1968-02-20 1969-07-29 Frank Siragusa Filter
US3504677A (en) * 1969-02-19 1970-04-07 Max J Doppelt Cigarette and/or cigarette holder

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191023412A (en) * 1910-10-10 1911-10-05 William Monks Improvements in Tobacco Pipes.
US1916799A (en) * 1932-02-18 1933-07-04 James F Hughes Mouthplece for cigarettes
US2827903A (en) * 1956-02-13 1958-03-25 Niederman Henry Self cooling filter cigarette
US2954783A (en) * 1958-06-12 1960-10-04 Mac Farland Aveyard & Company Filter type tobacco smoking structure for removal of tar
US3167076A (en) * 1959-12-09 1965-01-26 Mare Ernest Filter tipped cigarettes
GB1047594A (en) * 1962-07-30 1966-11-09 Stanley Balfour Lynn Improvements in cigarette filters
US3457927A (en) * 1968-02-20 1969-07-29 Frank Siragusa Filter
US3504677A (en) * 1969-02-19 1970-04-07 Max J Doppelt Cigarette and/or cigarette holder

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777765A (en) * 1971-08-05 1973-12-11 Yoshinaga Prince Co Ltd Filter apparatus for removing tar and other deleterious substances from tobacco smoke
US4043776A (en) * 1974-07-15 1977-08-23 Orel Jeannette V Smoke sorbing device
US4146040A (en) * 1977-03-17 1979-03-27 Cohn Charles C Cigarettes
DE3153420C2 (en) * 1980-05-01 1992-12-24 British-American Tobacco Co. Ltd., London, Gb
US4452259A (en) * 1981-07-10 1984-06-05 Loews Theatres, Inc. Smoking articles having a reduced free burn time
GB2137067A (en) * 1983-03-25 1984-10-03 Brown & Williamson Tobacco Ventilated filter and smoke dispersing mouthpiece
US5113878A (en) * 1989-07-13 1992-05-19 Pasquale Polese Cigarette-holder including a filter, suitable to wean smokers from the habit of smoking
US6502580B1 (en) * 1997-09-23 2003-01-07 Alessandro Leonetti Luparini Hypobaric cigarette filter device
US7987856B2 (en) 2005-12-29 2011-08-02 Philip Morris Usa Inc. Smoking article with bypass channel
US20070186945A1 (en) * 2005-12-29 2007-08-16 Philip Morris Usa Inc. Smoking article with improved delivery profile
US8240315B2 (en) 2005-12-29 2012-08-14 Philip Morris Usa Inc. Smoking article with improved delivery profile
US9060546B2 (en) 2006-03-28 2015-06-23 Philip Morris Usa Inc. Smoking article with a restrictor
US7878963B2 (en) 2006-03-28 2011-02-01 Philip Morris Usa Inc. Smoking article with a restrictor
US8353298B2 (en) 2006-07-12 2013-01-15 Philip Morris Usa Inc. Smoking article with impaction filter segment
US20080017204A1 (en) * 2006-07-12 2008-01-24 Philip Morris Usa Inc. Smoking article with impaction filter segment
US8424539B2 (en) 2006-08-08 2013-04-23 Philip Morris Usa Inc. Smoking article with single piece restrictor and chamber
US20080035162A1 (en) * 2006-08-08 2008-02-14 Philip Morris Usa Inc. Smoking article with single piece restrictor and chamber
US8235056B2 (en) 2006-12-29 2012-08-07 Philip Morris Usa Inc. Smoking article with concentric hollow core in tobacco rod and capsule containing flavorant and aerosol forming agents in the filter system
US20080163877A1 (en) * 2006-12-29 2008-07-10 Philip Morris Usa Inc. Smoking article with concentric hollow core in tobacco rod and capsule containing flavorant and aerosol forming agents in the filter system
WO2008110931A2 (en) * 2007-03-09 2008-09-18 Philip Morris Products S.A. Smoking articles with restrictor and aerosol former
WO2008110929A3 (en) * 2007-03-09 2009-03-19 Philip Morris Prod Smoking article with open ended filter and restrictor
CN101657114B (en) 2007-03-09 2013-07-31 菲利普莫里斯生产公司 Smoking article with open ended filter and restrictor
JP2010520763A (en) * 2007-03-09 2010-06-17 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム Smoking article comprising a restrictor and aerosol former
WO2008110929A2 (en) * 2007-03-09 2008-09-18 Philip Morris Products S.A. Smoking article with open ended filter and restrictor
US20080216850A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Restrictor attachment for unfiltered smoking article
US8353302B2 (en) * 2007-03-09 2013-01-15 Philip Morris Usa Inc. Smoking articles with restrictor and aerosol former
US20080216853A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking article with open ended filter and restrictor
US20080216851A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking articles with restrictor and aerosol former
US8109277B2 (en) 2007-03-09 2012-02-07 Philip Morris USA Inc, Smoking article filter with annular restrictor and downstream ventilation
US8235057B2 (en) 2007-03-09 2012-08-07 Philip Morris Usa Inc. Smoking article with open ended filter and restrictor
US20080216848A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking article filter with annular restrictor and downstream ventilation
EP2537428A1 (en) * 2007-03-09 2012-12-26 Philip Morris Products S.A. Smoking article with open ended filter and restrictor
WO2008110931A3 (en) * 2007-03-09 2008-12-24 Philip Morris Prod Smoking articles with restrictor and aerosol former
US20100059075A1 (en) * 2008-09-09 2010-03-11 Steve Woodson Ventilated smoking material perforation apparatus and method
US20100059072A1 (en) * 2008-09-09 2010-03-11 Steve Woodson Ventilated smoking material perforation apparatus, method and product
US8424540B2 (en) 2009-10-09 2013-04-23 Philip Morris Usa Inc. Smoking article with valved restrictor
US20110083675A1 (en) * 2009-10-09 2011-04-14 Philip Morris Usa Inc. Smoking article with valved restrictor
US20110083687A1 (en) * 2009-10-09 2011-04-14 Philip Morris Usa Inc. Cigarette filter to reduce smoke deliveries in later puffs
US8434499B2 (en) 2009-10-09 2013-05-07 Philip Morris Usa Inc. Filter design for improving sensory profile of carbon filter-tipped smoking articles
US8905037B2 (en) 2009-10-15 2014-12-09 Philip Morris Inc. Enhanced subjective activated carbon cigarette
US20110088704A1 (en) * 2009-10-15 2011-04-21 Philip Morris Usa Inc. Enhanced subjective activated carbon cigarette
US9138016B2 (en) 2010-03-26 2015-09-22 Philip Morris Usa Inc. Smoking articles with significantly reduced gas vapor phase smoking constituents
JP2014528711A (en) * 2011-09-09 2014-10-30 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム Smoking article filter comprising flow restricting elements and the cavity
US10098386B2 (en) 2012-01-31 2018-10-16 Altria Client Services Llc Electronic cigarette
US9848656B2 (en) 2012-01-31 2017-12-26 Altria Client Services Llc Electronic cigarette
US10092037B2 (en) 2012-01-31 2018-10-09 Altria Client Services Llc Electronic cigarette
CN105105331A (en) * 2015-09-22 2015-12-02 浙江凯实激光科技股份有限公司 Built-in type smoke purifying filter

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