Patent US4121198A successfully refreshed from Google Patents.
Patent US2237318A successfully refreshed from Google Patents.
US2237318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct acting friction shock absorber
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1938-09-17
•
Granted: 1941-04-08
•
Expires: 1958-09-17
Abstract
No abstract record available.
Inventors
- 👤 Jacob R Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:10
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/08; F16F7/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-04-07 | 1944-10-07 | 1945-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-07 | 1948-10-07 | 1949-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-07 | 1952-10-07 | 1953-04-08 | $7700.00 | Window Closed / Lapsed |