US3020836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stencil aperture tabulating card
Assignee: International Business Machines Corp
•
Filing: 1960-12-27
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Granted: 1962-02-13
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Harry R Palmer
- 👤 Merle P Prater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:00
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/24; B41N1/242; B41L; B41L47/00; B41L47/02; B41L47/06; B41L47/14
Claims Analysis
Total Claims: 0
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References 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) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |