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Patent US3439344A successfully refreshed from Google Patents.
US3439344A
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Continuous data recording apparatus
Assignee: Unisys Corp
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Filing: 1966-08-09
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Granted: 1969-04-15
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Expires: 1986-08-09
Abstract
No abstract record available.
Inventors
- 👤 Dennis C Stanga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:30
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F3/0601; G06F3/0668; G06F3/0671; G06F3/0673; G06F3/0682
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2933678A
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US2937367A
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US3214736A
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US3159819A
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US3212063A
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US3245046A
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US3295109A
Cited
US3302180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |