Patent US2833677A successfully refreshed from Google Patents.
US2833677A
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Recording paper for spark recorders
Assignee: —
•
Filing: 1955-06-07
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Granted: 1958-05-06
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Expires: 1975-06-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:57
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/24; B41M5/245; H; H01; H01B; H01B1/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31703; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A MULTI-LAYER RECORDING PAPER FOR USE IN SPARK RECORDING BY PRINTING INTELLIGENCE BY ELECTRICALLY BURNING AWAY A METAL COATING, COMPRISING A BASIC PAPER LAYER WHICH IS CONDUCTIVE, A METALLIC TOP LAYER HAVING A LOW ELECTRIC CONDUCTANCE ACROSS ITS PLANE, AND A UNIFORM AND CONTINUOUS DIELECTRIC LAYER INTERPOSED BETWEEN THE TWO LAYERS AND THROUGHOUT ELECTRICALLY SEPARATING SAID BASIC LAYER AND SAID TOP LAYER.
Claim 2
Dependent Claim
62 words
A MULTI-LAYER RECORDING PAPER FOR USE IN SPARK RECORDING BY PRINTING INTELLIGENCE BY ELECTRICALLY BURNING AWAY A METAL COATING, COMPRISING A BASIC PAPER LAYER WHICH IS CONDUCTIVE, A METALLIC TOP LAYER HAVING A LOW ELECTRIC CONDUCTANCE ACROSS ITS PLANE, AND A UNIFORM AND CONTINUOUS DIELECTRIC LAYER INTERPOSED BETWEEN THE TWO LAYERS AND THROUGHOUT ELECTRICALLY SEPARATING SAID BASIC LAYER AND SAID TOP LAYER.
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |