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US3489340A
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Centrifugal compressor
Assignee: Garrett Corp
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Filing: 1968-04-16
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Granted: 1970-01-13
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Expires: 1988-04-16
Abstract
No abstract record available.
Inventors
- 👤 Glen H Holzhausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:07
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/026; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/441
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2362514A
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US2343486A
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US2377740A
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US2399072A
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US2709567A
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US2703674A
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US2695131A
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US3173241A
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US3072063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |