US2633868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air inlet device for internal-combustion engines
Assignee: Individual
•
Filing: 1950-09-22
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Granted: 1953-04-07
•
Expires: 1970-09-22
Abstract
No abstract record available.
Inventors
- 👤 Berhoudar Osep Vahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:35
CPC Classifications
F; F02; F02M; F02M21/00; F02M2700/00; F02M2700/13; F02M2700/1305; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4643; Y10T137/7722; Y10T137/7748; Y10T137/7749; Y10T137/7752; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7791; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8593; Y10T137/87265; Y10T137/8741; Y10T137/87418; Y10T137/87539
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |