Patent US1987341A successfully refreshed from Google Patents.
US1987341A
Expired / Lapsed
US
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Method of making pipe joints
Assignee: Youngstown Sheet and Tube Co
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Filing: 1931-07-15
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Granted: 1935-01-08
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Expires: 1951-07-15
Abstract
No abstract record available.
Inventors
- 👤 Henry W Kachel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:36
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/02; F16L13/0218; F16L13/0227; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-01-07 | 1938-07-09 | 1939-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-01-07 | 1942-07-09 | 1943-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-01-07 | 1946-07-09 | 1947-01-08 | $7700.00 | Window Closed / Lapsed |