US2563984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable plug gauge
Assignee: Lufkin Rule Co
•
Filing: 1947-11-29
•
Granted: 1951-08-14
•
Expires: 1967-11-29
Abstract
No abstract record available.
Inventors
- 👤 Eugene J Witchger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:28
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/08; G01B5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806893A
Cited
US953282A
Cited
US1072378A
Cited
US1656180A
Cited
GB546843A
Cited
GB569225A
Cited
US2478427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |