Patent US3281298A successfully refreshed from Google Patents.
US3281298A
Expired / Lapsed
US
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Manufacture of multiple glazing units
Assignee: PPG Industries Inc
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Filing: 1963-10-15
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Granted: 1966-10-25
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Expires: 1983-10-15
Abstract
No abstract record available.
Inventors
- 👤 Charles E Stroud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:36
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/66; E06B3/663; E06B3/66309; E06B3/66314; E06B3/673; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1751051A
Cited
US1985520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |