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US3458955A
Expired / Lapsed
US
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Door construction
Assignee: PPG Industries Inc
•
Filing: 1967-05-01
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Granted: 1969-08-05
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Expires: 1987-05-01
Abstract
No abstract record available.
Inventors
- 👤 Marvin V Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:30
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/06; E06B3/08; E06B3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1574493A
Cited
US1793081A
Cited
US2605869A
Cited
US2948366A
Cited
US3274735A
Cited
US3310920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |