US2693904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air bleed for compressors
Assignee: AV Roe Canada Ltd
•
Filing: 1950-11-14
•
Granted: 1954-11-09
•
Expires: 1970-11-14
Abstract
No abstract record available.
Inventors
- 👤 Boyd Winnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:58
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/52; F04D29/522; F04D27/00; F04D27/02; F04D27/0207; F04D27/0215
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
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Cited
US2520697A
Cited
US2637488A
Cited
GB619722A
Cited
GB625299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |