Patent US2600636A successfully refreshed from Google Patents.
Patent US2998658A successfully refreshed from Google Patents.
US2998658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for checking curvic couplings and the like
Assignee: Illinois Tool Works Inc
•
Filing: 1957-08-27
•
Granted: 1961-09-05
•
Expires: 1977-08-27
Abstract
No abstract record available.
Inventors
- 👤 Leslie S Pergande
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:54
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)
US1846270A
Cited
US1886543A
Cited
US1949014A
Cited
DE605041C
Cited
US2124006A
Cited
US2309142A
Cited
US2648135A
Cited
US2861348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |