US3398887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulated compressor
Assignee: Ingersoll Rand Co
•
Filing: 1966-08-23
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Granted: 1968-08-27
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Expires: 1986-08-23
Abstract
No abstract record available.
Inventors
- 👤 Grover D Fraser
- 👤 Frederick H Emilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:36
CPC Classifications
F; F04; F04C; F04C28/00; F04B; F04B39/00; F04B39/12; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/7036; Y10T137/7039; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86051
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) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |