Patent US3457873A successfully refreshed from Google Patents.
Patent US3018978A successfully refreshed from Google Patents.
US3018978A
Expired / Lapsed
US
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Electrical analogue computing apparatus
Assignee: Balfour Beatty PLC
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Filing: 1959-08-05
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Granted: 1962-01-30
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Expires: 1979-08-05
Abstract
No abstract record available.
Inventors
- 👤 Graneau Peter
- 👤 Bonikowski Zbigniew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:09
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/16; B; B65; B65H; B65H59/00; B65H59/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |