US2680435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling device
Assignee: Individual
•
Filing: 1952-08-21
•
Granted: 1954-06-08
•
Expires: 1972-08-21
Abstract
No abstract record available.
Inventors
- 👤 Gonzalez Julio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:16
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/10; B23Q11/1007; B23B; B23B49/00; B23B49/02; B23B49/026; B28; B28D; B28D1/00; B28D1/02; B28D1/04; B28D1/041; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/55; Y10T408/564; Y10T408/81; Y10T408/89; Y10T408/895; Y10T408/8957
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) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |