US3530458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analog to digital conversion system having improved accuracy
Assignee: Westinghouse Electric Corp
•
Filing: 1965-10-28
•
Granted: 1970-09-22
•
Expires: 1985-10-28
Abstract
No abstract record available.
Inventors
- 👤 Frank G Willard
- 👤 Francis T Thompson
- 👤 Clyde A Booker Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:46
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/60; H03M1/1205
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2897486A
Cited
US2852746A
Cited
US3127601A
Cited
US3178658A
Cited
US3201781A
Cited
US3351932A
Cited
US3354453A
Cited
US3368149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |