US2551058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring biased closure
Assignee: Individual
•
Filing: 1947-10-13
•
Granted: 1951-05-01
•
Expires: 1967-10-13
Abstract
No abstract record available.
Inventors
- 👤 Michael L Selzler
- 👤 Owen O Oleson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:45
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/02; F01P11/0204; F01P11/0209; F01P11/0214; Y; Y10; Y10S; Y10S220/00; Y10S220/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1263490A
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US1257229A
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US1393847A
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US1467609A
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US1574509A
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US1810019A
Cited
US1893704A
Cited
US2011619A
Cited
US2147586A
Cited
US2224385A
Cited
US2410606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |