US3035252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data handling equipment
Assignee: AT&T Inc
•
Filing: 1956-12-28
•
Granted: 1962-05-15
•
Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 William A Malthaner
- 👤 John F Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:33
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/20; G06; G06F; G06F3/00; G06F3/09; G11B27/00; G11B27/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2860325A
Cited
US2818322A
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US2702380A
Cited
US2921293A
Cited
US2907002A
Cited
US2814676A
Cited
US2858526A
Cited
US2960683A
Cited
US2907010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |