Structure and method of making magnetic cards
Abstract
Abstract A single plastic sheet is formed from a number of sheets that include a central core sheet having a plurality of windows, in each of which is a strip of magnetic material of the thickness thereof. The core sheet is first tacked to an opaque sheet, upon which the magnetic strips are laid when placed in the windows. The a second opaque sheet is placed over the core sheet, and clear sheets on which desired information is printed are placed on the opaque sheets. All the sheets are fused into a single sheet with the strips embedded therein, and is then cut into individual cards having respective strips at the same locations there into facilitate encoding and acceptance in an appropriate reader.
Inventors
- 👤 D Kramer
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |