US2417436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible drive coupling
Assignee: Individual
•
Filing: 1942-09-03
•
Granted: 1947-03-18
•
Expires: 1962-09-03
Abstract
No abstract record available.
Inventors
- 👤 Efrem N Natkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:43
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/64; F16D3/68; F16D2300/00; F16D2300/02; F16D2300/021; F16D2300/0212
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1425616A
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US1843787A
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US2003848A
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US2025826A
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US2022626A
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US2092704A
Cited
US2135634A
Cited
US2116195A
Cited
US2213277A
Cited
US2295003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |