US2571351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wringer
Assignee: Chamberlain Corp
•
Filing: 1947-06-19
•
Granted: 1951-10-16
•
Expires: 1967-06-19
Abstract
No abstract record available.
Inventors
- 👤 Nicholas L Etten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:51
CPC Classifications
D; D06; D06F; D06F45/00; D06F45/02; D06F45/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE16627E
Cited
US984819A
Cited
US1208339A
Cited
US1607947A
Cited
US2281683A
Cited
US2233386A
Cited
US2280313A
Cited
US2276574A
Cited
US2227130A
Cited
US2286811A
Cited
US2316281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |