US2668994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace valve or the like
Assignee: Crane Co
•
Filing: 1951-05-22
•
Granted: 1954-02-16
•
Expires: 1971-05-22
Abstract
No abstract record available.
Inventors
- 👤 George E Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:10
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14; B22D41/16; B22D41/20; B22D17/00; B22D17/20; B22D17/30; F; F27; F27B; F27B14/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US495704A
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US629459A
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US788671A
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US835520A
Cited
US1257478A
Cited
US2005311A
Cited
US2113894A
Cited
US2371604A
Cited
US2477838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |