US3042307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trigonometric function generators
Assignee: EMI Ltd
•
Filing: 1958-04-25
•
Granted: 1962-07-03
•
Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Booth Richard Herbert
- 👤 Macdonald Alexander Torrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:16
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/22; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/41; G05B19/4105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2839711A
Cited
US2967017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |