US3028935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid cooled friction device
Assignee: Wagner Electric Corp
•
Filing: 1958-06-16
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Granted: 1962-04-10
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Robert L Gold
- 👤 Robert E Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:30
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/24; F16D55/26; F16D65/00; F16D65/78; F16D65/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2821271A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |