Patent FR1483340A successfully refreshed from Google Patents.
Patent US2988191A successfully refreshed from Google Patents.
US2988191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
L grant
Assignee: —
•
Filing: —
•
Granted: 1961-06-13
•
Expires: 1978-06-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:39
CPC Classifications
G; G07; G07F; G07F9/00; G07F9/06; G07D; G07D5/00; G07D5/02; G07D9/00; G07D9/008; G07F1/00; G07F1/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1344841A
Cited
US69263A
Cited
US2594422A
Cited
DE51178C
Cited
US1734283A
Cited
US1355875A
Cited
US914821A
Cited
US1068782A
Cited
US975202A
Cited
US1200843A
Cited
US1114851A
Cited
US1291317A
Cited
US1986771A
Cited
US2519357A
Cited
US2423502A
Cited
US2532978A
Cited
US2547102A
Cited
US2642073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |