Patent US2794483A successfully refreshed from Google Patents.
US2794483A
Expired / Lapsed
US
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Preformed product for protecting and coating field joints of pipes
Assignee: Individual
•
Filing: 1955-11-28
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Granted: 1957-06-04
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Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 John R Hopkins
- 👤 Frank E Mcnulty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:39
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/18; F16L58/181; B; B29; B29C; B29C63/00; F16L21/00; F16L21/002; F16L21/005; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1064; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49888; Y10T428/00; Y10T428/24; Y10T428/24777; Y10T428/24793; Y10T428/31504; Y10T428/31844
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) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |