Patent US2422307A successfully refreshed from Google Patents.
US2422307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple processing frame
Assignee: Westinghouse Electric Corp
•
Filing: 1944-02-25
•
Granted: 1947-06-17
•
Expires: 1964-02-25
Abstract
No abstract record available.
Inventors
- 👤 Mako Dave
- 👤 Robert H George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:25
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D13/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US681658A
Cited
GB191004165A
Cited
GB191206841A
Cited
US1057800A
Cited
GB191212804A
Cited
US1234641A
Cited
US2112028A
Cited
US2181206A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |