Patent US3509530A successfully refreshed from Google Patents.
US3509530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acceleration switches
Assignee: ZF International UK Ltd
•
Filing: 1967-06-13
•
Granted: 1970-04-28
•
Expires: 1987-06-13
Abstract
No abstract record available.
Inventors
- 👤 Eric Bernard Parkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:46
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44; B60Q1/445; H; H01; H01H; H01H35/00; H01H35/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1256134A
Cited
US1288128A
Cited
US1901554A
Cited
AT140896B
Cited
US2106643A
Cited
GB613343A
Cited
US2671207A
Cited
US2704360A
Cited
US2778896A
Cited
US2831176A
Cited
US3372386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |