Patent US2732074A successfully refreshed from Google Patents.
US2732074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
kuthe
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:32
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US528594A
Cited
US2278488A
Cited
GB625632A
Cited
US2548965A
Cited
US2557557A
Cited
US2633244A
Cited
US2598818A
Cited
US2556292A
Cited
US2554879A
Cited
US2623607A
Cited
US2686596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |