US3408488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Square root computing circuit
Assignee: Shell USA Inc
•
Filing: 1965-03-26
•
Granted: 1968-10-29
•
Expires: 1985-03-26
Abstract
No abstract record available.
Inventors
- 👤 Hendrikus J Nihof
- 👤 Bijl Aart
- 👤 Albertus C H Borshoom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:22
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/20; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/363; G01F1/76; G01F1/86
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |