Patent US2372431A successfully refreshed from Google Patents.
US2372431A
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US
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Assignee: Individual
•
Filing: 1942-08-13
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Granted: 1945-03-27
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Expires: 1962-08-13
Abstract
No abstract record available.
Inventors
- 👤 Dale W Kahle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:10
CPC Classifications
E; E05; E05D; E05D3/00; E05D3/06; E05D3/12; E05D11/00; E05D11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-03-26 | 1948-09-25 | 1949-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-03-26 | 1952-09-25 | 1953-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-03-26 | 1956-09-25 | 1957-03-27 | $7700.00 | Window Closed / Lapsed |