US4757689B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cryopump and a method for the operation thereof
Assignee: Oerlikon Surface Solutions AG Pfaeffikon
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Filing: 1986-10-22
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Granted: 1996-07-02
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Expires: 2006-10-22
Abstract
No abstract record available.
Inventors
- 👤 Werner Baechler
- 👤 Hans-Joachim Forth
- 👤 Hans-Hermann Klein
- 👤 Wilhelm Strasser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:00
CPC Classifications
F; F04; F04B; F04B37/00; F04B37/06; F04B37/08; Y; Y10; Y10S; Y10S417/00; Y10S417/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-07-02 | 2000-01-01 | 2000-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-02 | 2004-01-01 | 2004-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-02 | 2008-01-01 | 2008-07-02 | $7700.00 | Window Closed / Lapsed |