US3441728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Square law function generator
Assignee: Bourns Inc
•
Filing: 1966-08-29
•
Granted: 1969-04-29
•
Expires: 1986-08-29
Abstract
No abstract record available.
Inventors
- 👤 Donald W Halfhill
- 👤 William Comley Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:03
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3211901A
Cited
US3173024A
Cited
US3089968A
Cited
US3315162A
Cited
US3264553A
Cited
US3241079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |