US2732974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
hedges
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:57
CPC Classifications
F; F25; F25D; F25D25/00; G; G07; G07F; G07F9/00; G07F9/10; G07F9/105; F25D2331/00; F25D2331/80; F25D2331/805
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US789086A
Cited
US951323A
Cited
US1651857A
Cited
US1566175A
Cited
US1778187A
Cited
US2005097A
Cited
US2095431A
Cited
US2308532A
Cited
US2638395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |