US2559961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jointed flexible level
Assignee: Individual
•
Filing: 1948-12-14
•
Granted: 1951-07-10
•
Expires: 1968-12-14
Abstract
No abstract record available.
Inventors
- 👤 Argus A Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:54
CPC Classifications
F; F16; F16C; F16C1/00; F16C1/02; F16C1/04; G; G01; G01C; G01C9/00; G01C9/18; G01C9/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1308815A
Cited
US958349A
Cited
US1015877A
Cited
US945275A
Cited
US1143256A
Cited
US1114656A
Cited
CH89419A
Cited
GB366311A
Cited
US1924094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |