US2420995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch mechanism
Assignee: Singer Co
•
Filing: 1944-07-20
•
Granted: 1947-05-20
•
Expires: 1964-07-20
Abstract
No abstract record available.
Inventors
- 👤 Henry C Nissen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:56
CPC Classifications
D; D05; D05B; D05B69/00; D05B69/30; D05B69/34; F; F16; F16H; F16H37/00; F16H2700/00; F16H2700/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1271476A
Cited
US1285065A
Cited
US1414233A
Cited
US1338668A
Cited
US1498300A
Cited
US2327980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-19 | 1950-11-18 | 1951-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-19 | 1954-11-18 | 1955-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-19 | 1958-11-18 | 1959-05-20 | $7700.00 | Window Closed / Lapsed |