US1470735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-spindle drill head
Assignee: HARPER BEAN Ltd
•
Filing: 1922-06-09
•
Granted: 1923-10-16
•
Expires: 1942-06-09
Abstract
No abstract record available.
Inventors
- 👤 Hey George
- 👤 Wilding James Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:07
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/16; B23B39/161; B23B39/162; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023
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) | 1926-10-15 | 1927-04-16 | 1927-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-10-15 | 1931-04-16 | 1931-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-10-15 | 1935-04-16 | 1935-10-16 | $7700.00 | Window Closed / Lapsed |