US3484593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus to perform integration or integration and square root extraction
Assignee: Fischer and Porter Co
•
Filing: 1966-05-19
•
Granted: 1969-12-16
•
Expires: 1986-05-19
Abstract
No abstract record available.
Inventors
- 👤 Roy F Schmoock
- 👤 Peter W Guenther
- 👤 Peter S Levesque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:57
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/20; H; H03; H03M; H03M1/00; H03M1/06; H03M1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3020417A
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US3002690A
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US3048336A
Cited
US3028501A
Cited
US3280313A
Cited
US3256426A
Cited
US3337722A
Cited
US3289154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |