Patent US2980080A successfully refreshed from Google Patents.
US2980080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Karl-evert a
Assignee: —
•
Filing: —
•
Granted: 1961-04-18
•
Expires: 1978-04-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:37
CPC Classifications
F; F01; F01L; F01L23/00; B; B06; B06B; B06B1/00; B06B1/18; F15; F15B; F15B21/00; F15B21/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1264318A
Cited
US1665046A
Cited
US1971048A
Cited
US2310750A
Cited
US2447312A
Cited
US2627248A
Cited
US2826176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |