US2935851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pressure applying tool
Assignee: Blackhawk Manufacturing Co
•
Filing: 1957-08-05
•
Granted: 1960-05-10
•
Expires: 1977-08-05
Abstract
No abstract record available.
Inventors
- 👤 Neil F Atherton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:11
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/24; B66F3/25; B66F3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1427241A
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US2049335A
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US2498698A
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US2434282A
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US2434949A
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US2452482A
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US2548902A
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US2451390A
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US2828611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |