Patent US2202303A successfully refreshed from Google Patents.
US2202303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic checking mechanism
Assignee: Individual
•
Filing: 1939-07-01
•
Granted: 1940-05-28
•
Expires: 1959-07-01
Abstract
No abstract record available.
Inventors
- 👤 Swanson Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:07
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/10; F16F9/14; F16F9/145; E; E05; E05F; E05F3/00; E05F3/14; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/21; E05Y2201/23; E05Y2201/232; E05Y2201/252; E05Y2201/254; E05Y2201/262; E05Y2201/266; E05Y2201/40; E05Y2201/43; E05Y2201/448; E05Y2201/458
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) | 1943-05-28 | 1943-11-27 | 1944-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-28 | 1947-11-27 | 1948-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-28 | 1951-11-27 | 1952-05-28 | $7700.00 | Window Closed / Lapsed |