Patent US2204294A successfully refreshed from Google Patents.
US2204294A
Expired / Lapsed
US
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Exhaust pipe
Assignee: Eclipse Aviation Corp
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Filing: 1938-06-23
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Granted: 1940-06-11
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Expires: 1958-06-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur D Blanchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:34
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N3/00; F01N3/02; F01N3/04; F01N3/043; F28; F28D; F28D7/00; F28D7/10; F28D7/106; F28F; F28F1/00; F28F1/08; F01N2450/00; F01N2450/16; F01N2470/00; F01N2470/12; F01N2470/24; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S220/00; Y10S220/07; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49877; Y10T29/49879
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) | 1943-06-11 | 1943-12-11 | 1944-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-06-11 | 1947-12-11 | 1948-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-06-11 | 1951-12-11 | 1952-06-11 | $7700.00 | Window Closed / Lapsed |