US2672690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for tracing the profiles of devices
Assignee: Napier Turbochargers Ltd
•
Filing: 1950-06-12
•
Granted: 1954-03-23
•
Expires: 1970-06-12
Abstract
No abstract record available.
Inventors
- 👤 Crook William Charles Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:32
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/20; G01B5/205
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE492948C
Cited
CH176006A
Cited
US2352695A
Cited
US2368853A
Cited
US2468995A
Cited
GB616970A
Cited
GB616759A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |