Patent US5511081A successfully refreshed from Google Patents.
Patent US3453215A successfully refreshed from Google Patents.
US3453215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot pressed polycrystalline laser material
Assignee: Eastman Kodak Co
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Filing: 1967-03-06
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Granted: 1969-07-01
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Expires: 1987-03-06
Abstract
No abstract record available.
Inventors
- 👤 Edward Carnall Jr
- 👤 Sherley E Hatch
- 👤 William F Parsons
- 👤 Robert J Weagley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:41
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/17; H01S3/1601; H01S3/1603; H01S3/1606; H01S3/163; H01S3/1645; H01S3/165; H01S3/1666
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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |