US2723920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copying means and process for manufacturing same
Assignee: Individual
•
Filing: 1951-03-14
•
Granted: 1955-11-15
•
Expires: 1971-03-14
Abstract
No abstract record available.
Inventors
- 👤 Schwammberger Elsa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:10
CPC Classifications
A; A41; A41H; A41H3/00; A41H3/02; Y; Y10; Y10S; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964; Y10T428/249965; Y10T428/31504; Y10T428/31725; Y10T428/31765; Y10T428/31768; Y10T428/31772; Y10T428/31775; Y10T428/31826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PROCESS OF MANUFACTURING COPYING MEANS, WHICH COMPISES THE STEPS OF RUBBING DOWN ONE SIDE OF A POROUS BASE WITH TURPENTINE, DRYING THE SAME, APPLYING A COAT OF AQUEOUS GLUE SOLUTION TO SAID SIDE, APPLYING A PRIMING COAT COMPRISING A PIGMENT, HYDROUS CALCIUM SULPHATE AND WATER TO SAID SIDE, DRYING THE WHOLE, APPLYING AN INTERMEDIARY LAYER INCLUDING LATEX AND AQUEOUS AMMONIA SOLUTION TO SAID PRIMING COAT, DRYING THE INTERMEDIARY LAYER, APPLYING A SPREADABLE MIXTURE OF PIGMENT, OIL AND A DRIER TO THE INTERMEDIARY LAYER TO FORM THE MARKING LAYER, REPEATING SUCH LAST-MENTIONED APPLICATION A NUMBER OF TIMES AFTER THE PRECEDING APPLICATION HAS DRIED, TREATING THE DRY MARKING LAYER WITH A FIXING AGENT PETROLEUM JELLY AND PETROLEUM JELLY OIL, DRYING AGAIN, AND RUBBING DOWN THE MARKING LAYER WITH A COVERING AGENT COMPRISING PIGMENTS, WATER, TURPENTINE, GLYCEROL AND SOAP.
Claim 2
Dependent Claim
137 words
A PROCESS OF MANUFACTURING COPYING MEANS, WHICH COMPISES THE STEPS OF RUBBING DOWN ONE SIDE OF A POROUS BASE WITH TURPENTINE, DRYING THE SAME, APPLYING A COAT OF AQUEOUS GLUE SOLUTION TO SAID SIDE, APPLYING A PRIMING COAT COMPRISING A PIGMENT, HYDROUS CALCIUM SULPHATE AND WATER TO SAID SIDE, DRYING THE WHOLE, APPLYING AN INTERMEDIARY LAYER INCLUDING LATEX AND AQUEOUS AMMONIA SOLUTION TO SAID PRIMING COAT, DRYING THE INTERMEDIARY LAYER, APPLYING A SPREADABLE MIXTURE OF PIGMENT, OIL AND A DRIER TO THE INTERMEDIARY LAYER TO FORM THE MARKING LAYER, REPEATING SUCH LAST-MENTIONED APPLICATION A NUMBER OF TIMES AFTER THE PRECEDING APPLICATION HAS DRIED, TREATING THE DRY MARKING LAYER WITH A FIXING AGENT PETROLEUM JELLY AND PETROLEUM JELLY OIL, DRYING AGAIN, AND RUBBING DOWN THE MARKING LAYER WITH A COVERING AGENT COMPRISING PIGMENTS, WATER, TURPENTINE, GLYCEROL AND SOAP.
References Cited (Backward Citations)
US911594A
Cited
US1950982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |