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Patent US2827227A successfully refreshed from Google Patents.
US2827227A
Expired / Lapsed
US
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Compressor
Assignee: Specialties Development Corp
•
Filing: 1954-03-01
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Granted: 1958-03-18
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Expires: 1974-03-01
Abstract
No abstract record available.
Inventors
- 👤 Albertus E Schmidlin
- 👤 Warren E Herr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:52
CPC Classifications
F; F04; F04B; F04B25/00; F04B27/00; F04B27/04; F04B27/0404; F04B27/0414; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18248; Y10T74/18256
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) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |