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US2743894A
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Assignee: Individual
•
Filing: 1951-09-08
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Granted: 1956-05-01
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Expires: 1971-09-08
Abstract
No abstract record available.
Inventors
- 👤 Ostnas Anders Kristoffer Arne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:23
CPC Classifications
A; A45; A45F; A45F5/00; A45F5/02; A45F5/1566; Y; Y10; Y10S; Y10S273/00; Y10S273/19; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45602; Y10T24/45775; Y10T24/45984; Y10T24/4599
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US519148A
Cited
US2563533A
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US718948A
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US950978A
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US1368665A
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US1464452A
Cited
US2543313A
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US2559981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |