US2392774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drilling holes in cylindrical supports or the like
Assignee: DORAN BROTHERS Inc
•
Filing: 1944-06-14
•
Granted: 1946-01-08
•
Expires: 1964-06-14
Abstract
No abstract record available.
Inventors
- 👤 Schultze Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:15
CPC Classifications
B; B27; B27C; B27C3/00; B27C3/02; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/17; Y10T408/55; Y10T408/557; Y10T408/561; Y10T408/5614
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1949-01-07 | 1949-07-09 | 1950-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-07 | 1953-07-09 | 1954-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-07 | 1957-07-09 | 1958-01-08 | $7700.00 | Window Closed / Lapsed |