US3435446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital encoder
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1965-01-04
•
Granted: 1969-03-25
•
Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 David H Margolien
- 👤 Walter N Kanawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:00
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/60; H03; H03M; H03M1/00; H01H2001/0005; H03M1/12; H03M1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2873441A
Cited
US2958860A
Cited
US2977582A
Cited
US3111660A
Cited
US3070787A
Cited
US3143730A
Cited
US3100299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |