US2092844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for counterbalancing a force
Assignee: Individual
•
Filing: 1935-11-14
•
Granted: 1937-09-14
•
Expires: 1955-11-14
Abstract
No abstract record available.
Inventors
- 👤 Hoekstra Hendrik Arius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:49
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/14; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/38; G01L; G01L13/00; G01L13/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8326
Claims Analysis
Total Claims: 0
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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) | 1940-09-13 | 1941-03-15 | 1941-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-09-13 | 1945-03-15 | 1945-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-09-13 | 1949-03-15 | 1949-09-14 | $7700.00 | Window Closed / Lapsed |