Patent US3440694A successfully refreshed from Google Patents.
Patent US2668549A successfully refreshed from Google Patents.
US2668549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic parts washer
Assignee: Protectoseal Co
•
Filing: 1949-04-28
•
Granted: 1954-02-09
•
Expires: 1969-04-28
Abstract
No abstract record available.
Inventors
- 👤 William A Lebus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:10
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US853700A
Cited
US1737480A
Cited
GB339477A
Cited
US1886578A
Cited
US1995300A
Cited
CH124722A
Cited
US2037568A
Cited
US2155464A
Cited
US2267069A
Cited
US2313350A
Cited
US2315572A
Cited
US2440619A
Cited
US2522806A
Cited
US2499025A
Cited
US2512408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |