US3488906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated curtain wall construction with a gutter flange and means of egress
Assignee: PPG Industries Inc
•
Filing: 1967-12-21
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Granted: 1970-01-13
•
Expires: 1987-12-21
Abstract
No abstract record available.
Inventors
- 👤 Marvin V Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:22
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)
US1832847A
Cited
US2976970A
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US2949981A
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US3052330A
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US3147518A
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US3266207A
Cited
US3367077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |