US4204341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent communication chart
Assignee: Individual
•
Filing: 1979-01-05
•
Granted: 1980-05-27
•
Expires: 1999-01-05
Abstract
Abstract A hand held transparent card is imprinted with letters and numbers on a five by eight grid of squares. The numerals, the alphabet, a slash mark and several abbreviated symbols are sequentially imprinted in the center of the said squares.
Inventors
- 👤 Paul Nowak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:36
CPC Classifications
G; G09; G09B; G09B21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A hand held transparent card imprinted with letters and numbers on a grid comprising: a transparent plastic rectangular card, a handle attached to the said card, a five by eight grid of squares imprinted on the card, the numerals, the alphabet, a slash mark and several abbreviated symbols being sequentially imprinted in the center of the said squares.
Claim 2
Dependent Claim
58 words
A hand held transparent card imprinted with letters and numbers on a grid comprising: a transparent plastic rectangular card, a handle attached to the said card, a five by eight grid of squares imprinted on the card, the numerals, the alphabet, a slash mark and several abbreviated symbols being sequentially imprinted in the center of the said squares.
References Cited (Backward Citations)
US450615A
Cited
US1415833A
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US1716036A
Cited
US1801546A
Cited
US1962687A
Cited
US3670435A
Cited
US3673711A
Cited
US3879859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-27 | 1983-11-26 | 1984-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-27 | 1987-11-26 | 1988-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-27 | 1991-11-26 | 1992-05-27 | $7700.00 | Window Closed / Lapsed |