Patent US2597472A successfully refreshed from Google Patents.
Patent US4719639B1 successfully refreshed from Google Patents.
US4719639B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon dioxide slab laser
Assignee: BOREAL LASER Inc
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Filing: 1987-01-08
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Granted: 1994-06-28
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Expires: 2007-01-08
Abstract
No abstract record available.
Inventors
- 👤 John Tulip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:32
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/0315; H01S3/14; H01S3/22; H01S3/223; H01S3/2232
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) | 1997-06-27 | 1997-12-27 | 1998-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-27 | 2001-12-27 | 2002-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-27 | 2005-12-27 | 2006-06-28 | $7700.00 | Window Closed / Lapsed |