US2472671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus
Assignee: —
•
Filing: —
•
Granted: 1949-06-07
•
Expires: 1966-06-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:01
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/06; F02P3/08; H; H05; H05B; H05B47/00; H05B47/10; H05B47/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2030228A
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US2203579A
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US2260331A
Cited
US2353527A
Cited
US2147472A
Cited
US2221569A
Cited
US2278481A
Cited
US2328444A
Cited
US2402607A
Cited
US2394039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |