Patent US2980972A successfully refreshed from Google Patents.
US2980972A
Expired / Lapsed
US
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Joint for low density laminated synthetic resin panels
Assignee: Evans Products Co
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Filing: 1956-02-02
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Granted: 1961-04-25
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Expires: 1976-02-02
Abstract
No abstract record available.
Inventors
- 👤 George E Kloote
- 👤 Joseph A Potchen
- 👤 George D Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:16
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/61; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |