Patent US2452280A successfully refreshed from Google Patents.
US2452280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorbing seat structure for tractors
Assignee: ISAAC J FICKEL
•
Filing: 1944-11-29
•
Granted: 1948-10-26
•
Expires: 1964-11-29
Abstract
No abstract record available.
Inventors
- 👤 Zahller Virgil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:23
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/50; B60N2/502; B60N2/24; B60N2/38; B60N2/506; B60N2/54; B60N2/544
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US74208A
Cited
US187542A
Cited
US420060A
Cited
US666802A
Cited
FR382606A
Cited
US1171297A
Cited
US1229488A
Cited
US1288445A
Cited
US1426115A
Cited
US1663112A
Cited
US1961145A
Cited
US2115830A
Cited
US2162476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |