US3487574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible sleeve
Assignee: LOEOEF NILS OSKAR T
•
Filing: 1964-12-18
•
Granted: 1970-01-06
•
Expires: 1984-12-18
Abstract
No abstract record available.
Inventors
- 👤 Nils Oskar Tore Loof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:40
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/36; H01B7/368; Y; Y10; Y10S; Y10S116/00; Y10S116/41
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US71222A
Cited
US1989914A
Cited
US1095100A
Cited
US1474011A
Cited
US2157564A
Cited
US2823702A
Cited
US3201111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |