US3408828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system and system for separating oil from compressed gas
Assignee: Dunham Bush Inc
•
Filing: 1967-09-08
•
Granted: 1968-11-05
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Expires: 1987-09-08
Abstract
No abstract record available.
Inventors
- 👤 Soumerai Henri
- 👤 Jr Harold W Moody
- 👤 Clark B Hamilton
- 👤 James R Blatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:52
CPC Classifications
F; F04; F04C; F04C28/00; F04C28/10; F04C28/12; F04C28/125; F04C29/00; F04C29/02; F04C29/026; F25; F25B; F25B43/00; F25B43/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2610480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |