US2661118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Housing closure
Assignee: Westinghouse Electric Corp
•
Filing: 1950-07-25
•
Granted: 1953-12-01
•
Expires: 1970-07-25
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Bennighof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:51
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1836669A
Cited
US830050A
Cited
US1099986A
Cited
US1628406A
Cited
US1491325A
Cited
US2142230A
Cited
US2357162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |