US2590169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torsional drive shaft
Assignee: Jack & Heintz Prec Ind Inc
•
Filing: 1951-01-31
•
Granted: 1952-03-25
•
Expires: 1971-01-31
Abstract
No abstract record available.
Inventors
- 👤 Dwain E Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:31
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/003; F; F16; F16C; F16C3/00; F16C3/02; F16C3/023; F16F; F16F15/00; F16F15/10; F16C2380/00; F16C2380/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2346432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |