Patent US1493433A successfully refreshed from Google Patents.
US1493433A
Expired / Lapsed
US
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Friction device
Assignee: REX ENGINEERING Co
•
Filing: 1922-05-12
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Granted: 1924-05-06
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Expires: 1942-05-12
Abstract
No abstract record available.
Inventors
- 👤 Emil J Guay
- 👤 Guay Joseph Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:37
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/60; F16D13/64; F16D13/648
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) | 1927-05-06 | 1927-11-05 | 1928-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-05-06 | 1931-11-05 | 1932-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-05-06 | 1935-11-05 | 1936-05-06 | $7700.00 | Window Closed / Lapsed |