Patent US3899137A successfully refreshed from Google Patents.
US3899137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning device for photo-slides
Assignee: Individual
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Filing: 1974-12-17
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Granted: 1975-08-12
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Expires: 1994-12-17
Abstract
Abstract A photo slide cleaning apparatus which includes allochirally shaped members of compound curvature having concavely shaped surfaces which are juxtaposed so as to provide space for easy passage therethrough of a slide and containing opposed openings for passage of air in the form of jets to remove dust from said slide.
Inventors
- 👤 Martin Shenker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:54
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/14; G; G03; G03D; G03D15/00; B05B1/1421; B05B1/1422
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
53 words
A device for cleaning dust from a miniaturized flat article comprising two allochirally shaped and juxtaposed members providing a space therebetween for insertion of the work piece, said members having a compound curvature of semi-circular crosssection with opposed surfaces that are concave, with each said face having openings for providing opposed air jets.
Claim 2
Independent Claim
53 words
A device for cleaning dust from a miniaturized flat article comprising two allochirally shaped and juxtaposed members providing a space therebetween for insertion of the work piece, said members having a compound curvature of semi-circular crosssection with opposed surfaces that are concave, with each said face having openings for providing opposed air jets.
Claim 3
Dependent Claim
18 words
The device of claim 1 wherein the openings are located along the longitudinal center axis and equidistantly spaced.
Claim 4
Dependent Claim
10 words
The device of claim 2 wherein the openings are tubular.
Claim 5
Dependent Claim
22 words
The device of claim 3 wherein the openings are about 1/16 of an inch in diameter for removing dust from a photo-slide.
Claim 6
Dependent Claim
26 words
The device of claim 1 wherein an air ionizing means is connected to a compressed air source so as to provide ionized air for the jets.
Claim 7
Dependent Claim
44 words
A dust removal device for small flat work pieces comprising juxtaposed concavely surfaced members containing a series of longitudinally spaced openings to provide air jets as the sole means for cleaning the dust from said work when placed between the jaws of said members.
Claim 8
Dependent Claim
44 words
A dust removal device for small flat work pieces comprising juxtaposed concavely surfaced members containing a series of longitudinally spaced openings to provide air jets as the sole means for cleaning the dust from said work when placed between the jaws of said members.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |