US3520668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow glass article by module immersion technique
Assignee: OI Glass Inc
•
Filing: 1965-10-23
•
Granted: 1970-07-14
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 George E Keefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:02
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08; C; C03; C03B; C03B19/00; C03B19/02; C03B32/00; C03B32/02; C03C; C03C10/00; C03C10/0018; C03C10/0027; G02B5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |