Patent US3333490A successfully refreshed from Google Patents.
US3333490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-slip drill bits
Assignee: Individual
•
Filing: 1965-07-21
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Granted: 1967-08-01
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Expires: 1985-07-21
Abstract
No abstract record available.
Inventors
- 👤 Popin Valimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:31
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/005; B23B2231/00; B23B2231/02; B23B2231/0216; B23B2231/0228; B23B2231/026; B23B2231/0264; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/907
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |