US3396907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant compressor with sound absorbing structure
Assignee: Danfoss AS
•
Filing: 1966-07-14
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Granted: 1968-08-13
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Expires: 1986-07-14
Abstract
No abstract record available.
Inventors
- 👤 Knud V Valbjorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:01
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/0027; F04B39/0055; F04B39/02; F04B39/0223; F04B39/023; F04B39/0238; F04B39/0246; F04B39/12; F04B39/128; F25; F25B; F25B31/00; F25B31/02; F25B31/023; Y; Y10; Y10S; Y10S417/00; Y10S417/902
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) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |