Patent US3419659A successfully refreshed from Google Patents.
US3419659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sun screening methods
Assignee: GAF Corp
•
Filing: 1964-07-08
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Granted: 1968-12-31
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Expires: 1984-07-08
Abstract
No abstract record available.
Inventors
- 👤 Sigmund C Catino
- 👤 Albert F Strobel
- 👤 Blumenkopf Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:33
CPC Classifications
C; C07; C07C; C07C251/00; C07C251/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB677253A
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US2672463A
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US2668178A
Cited
DE962524C
Cited
GB727870A
Cited
US2749270A
Cited
AT217449B
Cited
US3314914A
Cited
US3153089A
Cited
US3182082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |