US1988413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction coupling
Assignee: MAGNET WERKE GmbH
•
Filing: 1931-02-11
•
Granted: 1935-01-15
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Expires: 1951-02-11
Abstract
No abstract record available.
Inventors
- 👤 Bing Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:57
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/02; F16D27/04; F16D27/08; F16D48/00; F16D48/06; F16D48/064; F16D2027/002; F16D2500/00; F16D2500/10; F16D2500/102; F16D2500/1021; F16D2500/1022; F16D2500/104; F16D2500/10443; F16D2500/1045; F16D2500/30; F16D2500/302; F16D2500/3024; F16D2500/304; F16D2500/30404; F16D2500/50; F16D2500/502; F16D2500/50296; F16D2500/51; F16D2500/5104; F16D2500/5106; F16D2500/5114; F16D2500/70; F16D2500/704; F16D2500/70402; F16D2500/7041; Y; Y10; Y10S; Y10S200/00; Y10S200/22
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) | 1938-01-14 | 1938-07-16 | 1939-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-01-14 | 1942-07-16 | 1943-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-01-14 | 1946-07-16 | 1947-01-15 | $7700.00 | Window Closed / Lapsed |