Patent US395841A successfully refreshed from Google Patents.
Patent US2491673A successfully refreshed from Google Patents.
US2491673A
Expired / Lapsed
US
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Shoe for pipe joints
Assignee: TEXAS FOUNDRIES Inc
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Filing: 1949-01-05
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Granted: 1949-12-20
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Expires: 1969-01-05
Abstract
No abstract record available.
Inventors
- 👤 Harold T Lytle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:51
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/0036; F16L25/0054; F16L21/00; F16L21/06; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T403/00; Y10T403/57
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) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |