US2472795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for ranges
Assignee: Individual
•
Filing: 1945-12-22
•
Granted: 1949-06-14
•
Expires: 1965-12-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:38
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/12; G; G04; G04F; G04F3/00; G04F3/02; G04F3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |