US2739684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pole piece unit for magnets
Assignee: Dana Inc
•
Filing: 1955-01-21
•
Granted: 1956-03-27
•
Expires: 1975-01-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:09
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; F; F16; F16D; F16D27/00; F16D27/10; F16D27/108; F16D27/112; F16D2027/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2039714A
Cited
US2695687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |