US2867409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Service jack
Assignee: Blackhawk Manufacturing Co
•
Filing: 1954-09-15
•
Granted: 1959-01-06
•
Expires: 1974-09-15
Abstract
No abstract record available.
Inventors
- 👤 Harold I Southerwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:58
CPC Classifications
B; B66; B66F; B66F7/00; B66F7/02; B66F7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2216058A
Cited
US2320600A
Cited
GB582188A
Cited
US2664073A
Cited
US2669422A
Cited
US2736531A
Cited
US2709015A
Cited
US2763465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |