US2470824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card index file
Assignee: KARL OLOV ALENIUS
•
Filing: 1946-10-02
•
Granted: 1949-05-24
•
Expires: 1966-10-02
Abstract
No abstract record available.
Inventors
- 👤 Lundqvist Axel Georg
- 👤 Lundqvist Nils Hjalmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:09
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US838962A
Cited
US1280737A
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US1654053A
Cited
US1672022A
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US1831938A
Cited
US2035352A
Cited
US1999162A
Cited
US2284531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |