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US2157089A
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Assignee: Chandler Evans Inc
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Filing: 1935-10-26
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Granted: 1939-05-02
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Expires: 1955-10-26
Abstract
No abstract record available.
Inventors
- 👤 Harold A Storch
- 👤 Raymond V Dillon
- 👤 Stuart H Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:20
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/24; F04C14/26; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/16; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K17/00; F16K17/02; F16K17/04; F16K17/0433; F16K17/08; F16K17/082; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7772; Y10T137/7777; Y10T137/7837; Y10T137/785; Y10T137/7851; Y10T137/7852; Y10T137/7853; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7935; Y10T137/7939; Y10T137/8593; Y10T137/85978; Y10T137/86171
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) | 1942-05-01 | 1942-10-31 | 1943-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-01 | 1946-10-31 | 1947-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-01 | 1950-10-31 | 1951-05-02 | $7700.00 | Window Closed / Lapsed |