Patent US2659054A successfully refreshed from Google Patents.
Patent US3157934A successfully refreshed from Google Patents.
US3157934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core member
Assignee: Individual
•
Filing: 1961-04-28
•
Granted: 1964-11-24
•
Expires: 1981-04-28
Abstract
No abstract record available.
Inventors
- 👤 Frederick P Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:37
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/34; B28B7/348; B28B7/28; B28B7/346; Y; Y10; Y10S; Y10S425/00; Y10S425/037; Y10S425/044; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
FOR USE WITH STRUCTURE HAVING A CONCRETE FORMING SURFACE, A CORE MEMBER CONSISTING OF A SOLID BODY OF HIGH MOLECULAR WEIGHT MATERIAL PROVIDED WITH A TRANSVERSELY EXTENDING SOLID END PORTION CONSISTING ENTIRELY OF RELATIVELY SOFT, READILY DEFORMABLE, FLEXIBLE, RESILIENT MATERIAL ADAPTED TO ENGAGE THE CONCRETE FORMING SURFACE AND TO CONFORM TO ANY IRREGULARITIES THEREOF AS THE END PORTION FIRMLY SEALS AGAINST THE SURFACE, THE CORE ALSO HAVING A TRANSVERSLEY EXTENDING SOLID SECOND PORTION WHICH JOINS THE END PORTION, THE SECOND PORTION BEING RELATIVELY RIGID AND HARD AND RESISTANT TO DEFORMATION, THE SECOND PORTION BEING SPACED FROM SAID CONCRETE FORMING SURFACE, SUPPORT MEANS SECURED TO THE SECOND PORTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |