Patent US2853227A successfully refreshed from Google Patents.
US2853227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supersonic compressor
Assignee: Individual
•
Filing: 1948-05-29
•
Granted: 1958-09-23
•
Expires: 1968-05-29
Abstract
No abstract record available.
Inventors
- 👤 Melville W Beardsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:42
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0207; F04D27/0215; F04D17/00; F04D17/08; F04D17/10; F04D17/12; F04D17/127; F04D21/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US956839A
Cited
US1091581A
Cited
US1462592A
Cited
US2075984A
Cited
US2317723A
Cited
US2404334A
Cited
GB537720A
Cited
US2344366A
Cited
US2383385A
Cited
US2318990A
Cited
US2400714A
Cited
US2435236A
Cited
US2575682A
Cited
US2664850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |