Patent US3033538A successfully refreshed from Google Patents.
Patent US2346426A successfully refreshed from Google Patents.
US2346426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible rotary drive coupling
Assignee: FMC Corp
•
Filing: 1941-10-30
•
Granted: 1944-04-11
•
Expires: 1961-10-30
Abstract
No abstract record available.
Inventors
- 👤 James M Hait
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:04
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/008; F16; F16D; F16D3/00; F16D3/50; F16D3/72; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T403/00; Y10T403/49; Y10T403/4983; Y10T403/57; Y10T403/5706
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1947-04-11 | 1947-10-11 | 1948-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-04-11 | 1951-10-11 | 1952-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-04-11 | 1955-10-11 | 1956-04-11 | $7700.00 | Window Closed / Lapsed |