Patent US4369850B2 successfully refreshed from Google Patents.
US4369850B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure fluid jet cutting and drilling apparatus
Assignee: Valley Systems Inc
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Filing: 1980-07-28
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Granted: 1989-06-06
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Expires: 2000-07-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:53
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/028; B26; B26F; B26F3/00; B26F3/004; E; E21; E21B; E21B10/00; E21B10/60
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) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |