Patent US2239459A successfully refreshed from Google Patents.
US2239459A
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US
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Assignee: Individual
•
Filing: 1938-01-22
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Granted: 1941-04-22
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Expires: 1958-01-22
Abstract
No abstract record available.
Inventors
- 👤 Kattwinkel Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:13
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/14; A47L13/144; B; B60; B60T; B60T1/00; B60T1/02; B60T1/04; B60T11/00; B60T11/10; B60T11/103; B61; B61H; B61H5/00; F; F16; F16D; F16D55/00; F16D55/02; F16D55/04; F16D55/06; F16D55/10; F16D55/24; F16D55/26; F16D55/36; F16D55/40; F16D59/00; F16D59/02; F16D65/00; F16D65/78; F16D65/84; F16D65/853; F16D2125/00; F16D2125/02; F16D2125/14; F16D2127/00; F16D2127/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86558
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) | 1944-04-21 | 1944-10-21 | 1945-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-21 | 1948-10-21 | 1949-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-21 | 1952-10-21 | 1953-04-22 | $7700.00 | Window Closed / Lapsed |