US2396733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling machine
Assignee: DELTA Manufacturing CO
•
Filing: 1942-05-05
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Granted: 1946-03-19
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Expires: 1962-05-05
Abstract
No abstract record available.
Inventors
- 👤 Christy A Wiken
- 👤 Hugo V Boehnke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:16
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/32; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/48; B23Q1/4828; B23Q11/00; B23Q5/34; B23Q5/38; B23Q5/385; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/561; Y10T408/91; Y10T74/00; Y10T74/17; Y10T74/173
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) | 1949-03-18 | 1949-09-17 | 1950-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-03-18 | 1953-09-17 | 1954-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-03-18 | 1957-09-17 | 1958-03-19 | $7700.00 | Window Closed / Lapsed |