US3533897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optically clear roughened glass and method for making same
Assignee: United States Department of the Navy
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Filing: 1967-06-19
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Granted: 1970-10-13
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Expires: 1987-06-19
Abstract
No abstract record available.
Inventors
- 👤 Roland W Robbins Jr
- 👤 Stewart L Thorne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:13
CPC Classifications
B; B32; B32B; B32B27/00; C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; Y; Y10; Y10S; Y10S428/00; Y10S428/918; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24364; Y10T428/24479; Y10T428/24521; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/266; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31518; Y10T428/31551; Y10T428/31616
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2297787A
Cited
US2362980A
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US3050480A
Cited
US3218274A
Cited
US3328499A
Cited
US3408421A
Cited
US3389029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |