US2690797A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1951-02-23
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Granted: 1954-10-05
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Expires: 1971-02-23
Abstract
No abstract record available.
Inventors
- 👤 Jorgen C Eriksen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:04
CPC Classifications
E; E06; E06B; E06B1/00; E06B1/04; E06B1/36; E06B1/363; B; B61; B61D; B61D17/00; B61D17/04; Y; Y02; Y02T; Y02T30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |