US1994516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling tool
Assignee: CERAMIC DRILL Co
•
Filing: 1932-05-02
•
Granted: 1935-03-19
•
Expires: 1952-05-02
Abstract
No abstract record available.
Inventors
- 👤 Ralph A Hawn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:31
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/02; B28D1/04; B28D1/041; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/113; B23B49/00; B23B49/02; B23B49/026; B23B51/00; B23B51/0006; B23B51/0007; B23B51/04; B23B51/0426; B23B51/0473; B23B2260/00; B23B2260/082; B23B51/0467; Y; Y10; Y10T; Y10T408/00; Y10T408/44; Y10T408/55; Y10T408/554; Y10T408/81; Y10T408/89; Y10T408/895
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-03-18 | 1938-09-17 | 1939-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-03-18 | 1942-09-17 | 1943-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-03-18 | 1946-09-17 | 1947-03-19 | $7700.00 | Window Closed / Lapsed |