US3420580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skid control device
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1967-05-11
•
Granted: 1969-01-07
•
Expires: 1987-05-11
Abstract
No abstract record available.
Inventors
- 👤 Richard W Dymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:19
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/34; B60T8/42; B60T8/4208; B60T8/4266; Y; Y10; Y10S; Y10S188/00; Y10S188/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2964048A
Cited
US3231315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |