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Patent US3462341A successfully refreshed from Google Patents.
US3462341A
Expired / Lapsed
US
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Gypsum wallboard
Assignee: Owens Corning
•
Filing: 1968-07-16
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Granted: 1969-08-19
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Expires: 1988-07-16
Abstract
No abstract record available.
Inventors
- 👤 Robert J Littin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:24
CPC Classifications
B; B28; B28B; B28B19/00; B28B19/0092; E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/043; E04F; E04F13/00; E04F13/02; E04F13/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24777; Y10T428/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1719726A
Cited
US1787163A
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US1808003A
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US2082087A
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US2314449A
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US2681863A
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US3220915A
Cited
US3062670A
Cited
US3289371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |