Patent US3722891A successfully refreshed from Google Patents.
US1499412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling machine
Assignee: Niles Bement Pond Co
•
Filing: 1921-02-21
•
Granted: 1924-07-01
•
Expires: 1941-02-21
Abstract
No abstract record available.
Inventors
- 👤 Willard T Sears
- 👤 Roswell H Rausch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:38
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/12; Y; Y10; Y10T; Y10T408/00; Y10T408/91; Y10T408/93; Y10T408/935
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) | 1927-07-01 | 1927-12-31 | 1928-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-07-01 | 1931-12-31 | 1932-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-07-01 | 1935-12-31 | 1936-07-01 | $7700.00 | Window Closed / Lapsed |