US2572162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheetsxsheet i
Assignee: —
•
Filing: —
•
Granted: 1951-10-23
•
Expires: 1968-10-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:39
CPC Classifications
F; F03; F03G; F03G7/00; F03G7/06; F23; F23N; F23N5/00; F23N5/02; F23N5/10; F23N5/107; H; H01; H01H; H01H43/00; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2090619A
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US1980756A
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GB412082A
Cited
US2066145A
Cited
US2137507A
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US2347014A
Cited
US2203719A
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US2468996A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |