US2987608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for effecting an internally welded interconnection between pipe sections
Assignee: M J CROSE MANUFACTURING Co Inc
•
Filing: 1958-08-18
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Granted: 1961-06-06
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Expires: 1978-08-18
Abstract
No abstract record available.
Inventors
- 👤 William B Handwerk
- 👤 Sherrill Estill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:52
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/028; B23K9/0282; B23K9/0284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1679499A
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US1972029A
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US2034451A
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US2043556A
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US2260260A
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US2655585A
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DE893484C
Cited
US2749421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |