Patent US2563254A successfully refreshed from Google Patents.
US2563254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thickness indicator
Assignee: Hydril LLC
•
Filing: 1948-05-10
•
Granted: 1951-08-07
•
Expires: 1968-05-10
Abstract
No abstract record available.
Inventors
- 👤 George E Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:25
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/02; G01B7/06; G01B7/10; G01B7/107
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1925904A
Cited
US2051780A
Cited
US2133725A
Cited
US2041058A
Cited
GB460991A
Cited
US2116119A
Cited
US2111210A
Cited
US2124579A
Cited
US2155267A
Cited
US2195504A
Cited
US2269152A
Cited
US2258104A
Cited
US2226275A
Cited
US2331418A
Cited
US2315943A
Cited
US2258748A
Cited
US2417678A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |