US2828800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and product for coating joints of pipe
Assignee: Individual
•
Filing: 1956-08-03
•
Granted: 1958-04-01
•
Expires: 1976-08-03
Abstract
No abstract record available.
Inventors
- 👤 John R Hopkins
- 👤 Frank E Mcnulty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:27
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/18; F16L58/181; F16L59/00; F16L59/02; F16L59/021; Y; Y10; Y10S; Y10S118/00; Y10S118/11; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/1033; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24628
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1883305A
Cited
US1787492A
Cited
US1823974A
Cited
US2188001A
Cited
US2125208A
Cited
US2344264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |