Patent US3028172A successfully refreshed from Google Patents.
US3028172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parallelogram steering linkage
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1958-10-27
•
Granted: 1962-04-03
•
Expires: 1978-10-27
Abstract
No abstract record available.
Inventors
- 👤 Edward J Herbenar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:56
CPC Classifications
B; B62; B62D; B62D7/00; B62D7/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US981645A
Cited
US1354141A
Cited
US2060858A
Cited
US2305880A
Cited
US2464982A
Cited
US2479339A
Cited
US2470215A
Cited
US2761694A
Cited
US2771300A
Cited
US2835521A
Cited
US2852288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |