US2955460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-hydraulic vibration machine
Assignee: Northrop Grumman Corp
•
Filing: 1957-04-30
•
Granted: 1960-10-11
•
Expires: 1977-04-30
Abstract
No abstract record available.
Inventors
- 👤 Paul M Stevens
- 👤 Mitchell F Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:58
CPC Classifications
G; G01; G01M; G01M7/00; G01M7/02; G01M7/04; G01M7/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2709421A
Cited
US2767689A
Cited
US2823689A
Cited
US2773482A
Cited
US2771062A
Cited
US2880708A
Cited
US2886009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |