Patent FR1084473A successfully refreshed from Google Patents.
Patent US2770324A successfully refreshed from Google Patents.
US2770324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-leveling lift
Assignee: Individual
•
Filing: 1952-07-21
•
Granted: 1956-11-13
•
Expires: 1972-07-21
Abstract
No abstract record available.
Inventors
- 👤 Robert J Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:09
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/02; B66F9/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US508510A
Cited
US929870A
Cited
US959786A
Cited
US956205A
Cited
US991137A
Cited
US1268109A
Cited
US2095041A
Cited
US2139597A
Cited
US2174415A
Cited
US2409199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |