Patent US3512434A successfully refreshed from Google Patents.
US3512434A
Expired / Lapsed
US
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Drill with automatic feed and quick retraction
Assignee: Zephyr Manufacturing Co Inc
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Filing: 1967-11-29
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Granted: 1970-05-19
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Expires: 1987-11-29
Abstract
No abstract record available.
Inventors
- 👤 Daniel P Juhasz
- 👤 Luis A Bohorquez
- 👤 Pierre G Vindez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:40
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q5/00; B23Q5/22; B23Q5/32; B23Q5/326; Y; Y10; Y10T; Y10T408/00; Y10T408/18; Y10T408/65; Y10T408/675; Y10T408/6771; Y10T408/6793; Y10T408/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |