Patent US3752304A successfully refreshed from Google Patents.
US3752304A
Expired / Lapsed
US
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Masking devices
Assignee: Individual
•
Filing: 1971-09-07
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Granted: 1973-08-14
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Expires: 1991-09-07
Abstract
Abstract Masking device for use in painting at peripheries of rectangular surfaces comprising two triangular masks of sheet material.
Inventors
- 👤 P Alef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:43
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/16; B05B12/20; B05B12/24; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/15; Y10T428/24; Y10T428/24273; Y10T428/24777; Y10T428/24793
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
Masking means for use in painting peripheries of rectangular surfaces, comprising a rectangle of sheet material perforated along a diagonal, which can be used as a whole or separated and arranged in triangles with their hypotenuse overlapping and adjustably movable for fully masking the surface; and strips of adhesive upon the back of each triangle along the side edges and hypotenuse thereof; said masking means being formed in a continuous roll having a series of longitudinally spaced transverse performations, manually separable to form said rectangular sheets.
Claim 2
Dependent Claim
86 words
Masking means for use in painting peripheries of rectangular surfaces, comprising a rectangle of sheet material perforated along a diagonal, which can be used as a whole or separated and arranged in triangles with their hypotenuse overlapping and adjustably movable for fully masking the surface; and strips of adhesive upon the back of each triangle along the side edges and hypotenuse thereof; said masking means being formed in a continuous roll having a series of longitudinally spaced transverse performations, manually separable to form said rectangular sheets.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |