US2635474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulley structure
Assignee: CHARLES H HENNINGS
•
Filing: 1949-11-29
•
Granted: 1953-04-21
•
Expires: 1969-11-29
Abstract
No abstract record available.
Inventors
- 👤 Charles H Hennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:06
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/52; F16H55/56; F16H55/566; Y; Y10; Y10S; Y10S474/00; Y10S474/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1157666A
Cited
US1360815A
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US1606175A
Cited
US1842117A
Cited
US1798347A
Cited
US2199362A
Cited
US2260149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |