Patent US2989784A successfully refreshed from Google Patents.
US2989784A
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US
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Method of forming a plug of high melting point plastic bonded to a low melting point plastic
Assignee: AT&T Inc
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Filing: 1957-10-04
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Granted: 1961-06-27
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Expires: 1977-10-04
Abstract
No abstract record available.
Inventors
- 👤 Aamodt Thoralf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:51
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C66/00; B29C66/70; B29C66/73; B29C66/731; B29C66/7311; B29C66/73115; B29C66/73116; B29C66/71; B29C66/712; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2736064A
Cited
US2276380A
Cited
GB608992A
Cited
US2444075A
Cited
GB676543A
Cited
GB704352A
Cited
US2827618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |