Patent US1907461A successfully refreshed from Google Patents.
US1907461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Force measuring apparatus
Assignee: Blackwell & Sunde Inc
•
Filing: 1930-06-14
•
Granted: 1933-05-09
•
Expires: 1950-06-14
Abstract
No abstract record available.
Inventors
- 👤 Benjamin W Sunde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:13
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/16; E21B19/165; E21B19/166; B; B23; B23P; B23P19/00; B23P19/04; B23P19/06; B23P19/065; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53687
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) | 1936-05-08 | 1936-11-07 | 1937-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-05-08 | 1940-11-07 | 1941-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-05-08 | 1944-11-07 | 1945-05-09 | $7700.00 | Window Closed / Lapsed |