US3453598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Credit card verifier using transformers
Assignee: NASCO DESIGN CORP
•
Filing: 1965-06-03
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Granted: 1969-07-01
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Expires: 1985-06-03
Abstract
No abstract record available.
Inventors
- 👤 Max Norman Schweizer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:57
CPC Classifications
G; G07; G07F; G07F7/00; G07F7/08; G07F7/10; G06; G06K; G06K7/00; G06K7/08; G06K7/082; G06K7/083; G06K7/085; G06Q; G06Q20/00; G06Q20/30; G06Q20/34; G06Q20/347; G07F7/1025; G07F7/1058; Y; Y10; Y10S; Y10S283/00; Y10S283/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2634911A
Cited
US3100834A
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US3105154A
Cited
US3160867A
Cited
US3184714A
Cited
US3299298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |