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US2898140A
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US
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Assignee: Individual
•
Filing: 1955-08-15
•
Granted: 1959-08-04
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Expires: 1975-08-15
Abstract
No abstract record available.
Inventors
- 👤 Wilbur W Gislason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:23
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/54; Y; Y10; Y10S; Y10S292/00; Y10S292/15; Y10T; Y10T292/00; Y10T292/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US596118A
Cited
US1035264A
Cited
US1351453A
Cited
FR736252A
Cited
US2073024A
Cited
GB581634A
Cited
US2737408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |