Patent US3437795A successfully refreshed from Google Patents.
US3437795A
Expired / Lapsed
US
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Data input devices and systems
Assignee: Ampex Corp
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Filing: 1965-06-28
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Granted: 1969-04-08
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Maynard J Kuljian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/94; H03K17/965; H03K17/975; H03K17/98; G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/023; G06K; G06K7/00; G06K7/08; G06K7/081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2659533A
Cited
US3081594A
Cited
US3200240A
Cited
US3189731A
Cited
US3281541A
Cited
US3274345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |