Patent US2656730A successfully refreshed from Google Patents.
US2656730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulley and method of making same
Assignee: John E Mitchell Co
•
Filing: 1949-12-08
•
Granted: 1953-10-27
•
Expires: 1969-12-08
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Orville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:20
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/26; B21D53/261; F; F16; F16H; F16H55/00; F16H55/32; F16H55/36; F16H55/44; Y; Y10; Y10S; Y10S474/00; Y10S474/902; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49696; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US430000A
Cited
US638554A
Cited
US638470A
Cited
US1337808A
Cited
US1466157A
Cited
US1591183A
Cited
US1936909A
Cited
US1996109A
Cited
US2051216A
Cited
US2188953A
Cited
US2260149A
Cited
US2306389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |