Patent US5178012A successfully refreshed from Google Patents.
Patent US2800129A successfully refreshed from Google Patents.
Patent US3969852A successfully refreshed from Google Patents.
Patent FR899225A successfully refreshed from Google Patents.
Patent US4137769B1 successfully refreshed from Google Patents.
US4137769B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
US4137769B1 - - Google Patents
Assignee: —
•
Filing: 1978-02-06
•
Granted: 1988-10-11
•
Expires: 1998-02-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:36
CPC Classifications
G; G01; G01K; G01K11/00; G01K11/12; G01K3/00; G01K3/02; G01K3/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |