US2528005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrosensitive recording blank
Assignee: Western Union Telegraph Co
•
Filing: 1948-05-14
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Granted: 1950-10-31
•
Expires: 1968-05-14
Abstract
No abstract record available.
Inventors
- 👤 Bernard L Kline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:24
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
AN ELECTROSENSITIVE RECORDING BLANK COMPRISING A BODY PORTION, SAID BODY PORTION HAVING, OVER THE RECORDING SURFACE OF THE BLANK, A SURFACE LAYER OF A RECORDING MEDIUM COMPRISING COPROUS THIOCYANATE IN AN AMOUNT SUFFICIENT TO PRODUCE MARKING EFFECTS ON SELECTABLE ELEMENTAL AREAS OF SAID RECORDING SURFACE UPON APPLICATION OF AN ELECTRICAL SIGNALING POTENTIAL TO SAID AREAS.
Claim 2
Dependent Claim
55 words
AN ELECTROSENSITIVE RECORDING BLANK COMPRISING A BODY PORTION, SAID BODY PORTION HAVING, OVER THE RECORDING SURFACE OF THE BLANK, A SURFACE LAYER OF A RECORDING MEDIUM COMPRISING COPROUS THIOCYANATE IN AN AMOUNT SUFFICIENT TO PRODUCE MARKING EFFECTS ON SELECTABLE ELEMENTAL AREAS OF SAID RECORDING SURFACE UPON APPLICATION OF AN ELECTRICAL SIGNALING POTENTIAL TO SAID AREAS.
References Cited (Backward Citations)
US2294149A
Cited
US2425742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |