Patent US3237748A successfully refreshed from Google Patents.
US3237748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter eraser
Assignee: Individual
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Filing: 1964-06-16
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Granted: 1966-03-01
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Expires: 1984-06-16
Abstract
No abstract record available.
Inventors
- 👤 Arnold S Rifkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:38
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/26; B41J29/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE COMBINATION WITH A TYPEWRITER INCLUDING A PLATEN FOR CARRYING PAPER, TYPE MOVABLE TOWARD AND AWAY FROM THE PLATEN FOR IMPRINTING PAPER CARRIED BY THE PLATEN, AND KEYS ASSOCIATED WITH SAID TYPE FOR ACTUATING THE LATTER, OF AN ERASER COMPRISING A NOZZLE MOUNTED FOR MOVEMENT TOWARD AND AWAY FROM SAID PLATEN, AN ERASER KEY OPERATIVELY CONNECTED TO SAID NOZZLE FOR EFFECTING SAID NOZZLE MOVEMENT, PROPULSION MEANS CONNECTED TO SAID NOZZLE FOR PROPELLING ABRASIVE FROM SAID NOZZLE TOWARD A PAPER CARRIED BY SAID PLATEN FOR ABRADING THE SAME, AND WITHDRAWAL MEANS FOR COLLECTING ABRASIVE AND WASTE FROM SAID PAPER.
Claim 2
Dependent Claim
98 words
THE COMBINATION WITH A TYPEWRITER INCLUDING A PLATEN FOR CARRYING PAPER, TYPE MOVABLE TOWARD AND AWAY FROM THE PLATEN FOR IMPRINTING PAPER CARRIED BY THE PLATEN, AND KEYS ASSOCIATED WITH SAID TYPE FOR ACTUATING THE LATTER, OF AN ERASER COMPRISING A NOZZLE MOUNTED FOR MOVEMENT TOWARD AND AWAY FROM SAID PLATEN, AN ERASER KEY OPERATIVELY CONNECTED TO SAID NOZZLE FOR EFFECTING SAID NOZZLE MOVEMENT, PROPULSION MEANS CONNECTED TO SAID NOZZLE FOR PROPELLING ABRASIVE FROM SAID NOZZLE TOWARD A PAPER CARRIED BY SAID PLATEN FOR ABRADING THE SAME, AND WITHDRAWAL MEANS FOR COLLECTING ABRASIVE AND WASTE FROM SAID PAPER.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |