Patent US1854672A successfully refreshed from Google Patents.
US1854672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chip control device
Assignee: American Tool Works Co
•
Filing: 1931-02-25
•
Granted: 1932-04-19
•
Expires: 1951-02-25
Abstract
No abstract record available.
Inventors
- 👤 Albert E Robinson
- 👤 Charles E Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:19
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/22; Y; Y10; Y10S; Y10S29/00; Y10S29/052; Y10S29/063; Y10S82/00; Y10S82/901; Y10T; Y10T29/00; Y10T29/30; Y10T407/00; Y10T407/11; Y10T407/14; Y10T407/22; Y10T407/2222; Y10T407/2238; Y10T407/224; Y10T407/2242; Y10T82/00; Y10T82/25; Y10T82/2524
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) | 1935-04-19 | 1935-10-19 | 1936-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-04-19 | 1939-10-19 | 1940-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-04-19 | 1943-10-19 | 1944-04-19 | $7700.00 | Window Closed / Lapsed |