Patent US3418899A successfully refreshed from Google Patents.
US3418899A
Expired / Lapsed
US
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Method of forming concrete joints
Assignee: WR Grace and Co
•
Filing: 1966-04-25
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Granted: 1968-12-31
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Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 Fujihara Yoshiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:07
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/02; E01C23/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1890412A
Cited
US2111114A
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US2224148A
Cited
US2967467A
Cited
US3099110A
Cited
US3136022A
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 |