US3484327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making two-piece hollow devitrified mirror blank
Assignee: OI Glass Inc
•
Filing: 1965-07-01
•
Granted: 1969-12-16
•
Expires: 1985-07-01
Abstract
No abstract record available.
Inventors
- 👤 Robert R Denman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:07
CPC Classifications
C; C03; C03B; C03B32/00; C03B32/02; C03B19/00; C03B19/02; C03B23/00; C03B23/20; C03B23/203; C03C; C03C10/00; C03C10/0018; C03C10/0027; G; G02; G02B; G02B5/00; G02B5/08; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24744
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1934798A
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US2102049A
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US2045716A
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US2132390A
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US3157522A
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US3113877A
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US3246972A
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US3241985A
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US3320044A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |