US3466826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated curtain wall construction
Assignee: PPG Industries Inc
•
Filing: 1967-09-28
•
Granted: 1969-09-16
•
Expires: 1987-09-28
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Gallagher
- 👤 Renato J Mazzoni
- 👤 Samuel Dauson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:51
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/88; E04B2/96; E06; E06B; E06B3/00; E06B3/04; E06B3/263; E06B3/26336; E06B2003/26349; E06B2003/26369; E06B2003/26376; E06B2003/26392; E06B2003/26398; E06B3/26338; Y; Y10; Y10S; Y10S49/00; Y10S49/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US960677A
Cited
CH69594A
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US1832847A
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US2985263A
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US3052330A
Cited
US3093217A
Cited
US3099337A
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US3336707A
Cited
US3309122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |