US2169622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary air controller for internal combustion engines
Assignee: CEVIA AB
•
Filing: 1938-11-16
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Granted: 1939-08-15
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Expires: 1958-11-16
Abstract
No abstract record available.
Inventors
- 👤 Weietz Per Axel Reinar
- 👤 Olsson Lorentz Kristian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:05
CPC Classifications
F; F02; F02M; F02M23/00; F02M23/04; F02M23/08; F02M23/09; B; B66; B66F; B66F7/00; B66F7/10; B66F7/16; B66F7/18; F02M23/02; F02M23/03; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S261/00; Y10S261/01; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0923; Y10T137/7722; Y10T137/7748; Y10T137/7749; Y10T137/775; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/794; Y10T137/8122; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
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) | 1942-08-14 | 1943-02-13 | 1943-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-08-14 | 1947-02-13 | 1947-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-08-14 | 1951-02-13 | 1951-08-15 | $7700.00 | Window Closed / Lapsed |