US3128458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stylus controlled sign with contact grid of parallel plates
Assignee: Individual
•
Filing: 1962-05-10
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Granted: 1964-04-07
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Expires: 1982-05-10
Abstract
No abstract record available.
Inventors
- 👤 Romero Adolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:27
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A CONTACT GRID BOX FOR AN ELECTRIC WRITING BOARD COMPRISING IN COMBINATION: (A) SERIES OF PARALLEL CONTACT PLATES HAVING TRANSVERSE SLOTS FORMED IN THE SIDES THEREOF PLACED IN SIDE ABUTTING CONTACT, (B) INSULATED WIRES HAVING EXPOSED ENDS FITTED IN AND SUPPORTED BY THEIR INSULATION IN SAID SLOTS, (C) AND PLASTIC INSULATIVE MATERIAL IN THE ENDS OF SAID SLOTS SURROUNDING SAID EXPOSED ENDS OF SAID WIRES TO FORM A CONTINUOUS WRITING SURFACE GRID CONSISTING OF THE ENDS OF SAID WIRES AND THE CHECKERBOARD GRID CONTACT AREAS OF SAID PLATES FORMED BY SAID ENDS OF SAID SLOTS.
Claim 2
Dependent Claim
95 words
A CONTACT GRID BOX FOR AN ELECTRIC WRITING BOARD COMPRISING IN COMBINATION: (A) SERIES OF PARALLEL CONTACT PLATES HAVING TRANSVERSE SLOTS FORMED IN THE SIDES THEREOF PLACED IN SIDE ABUTTING CONTACT, (B) INSULATED WIRES HAVING EXPOSED ENDS FITTED IN AND SUPPORTED BY THEIR INSULATION IN SAID SLOTS, (C) AND PLASTIC INSULATIVE MATERIAL IN THE ENDS OF SAID SLOTS SURROUNDING SAID EXPOSED ENDS OF SAID WIRES TO FORM A CONTINUOUS WRITING SURFACE GRID CONSISTING OF THE ENDS OF SAID WIRES AND THE CHECKERBOARD GRID CONTACT AREAS OF SAID PLATES FORMED BY SAID ENDS OF SAID SLOTS.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |