Patent US2791194A successfully refreshed from Google Patents.
US2791194A
Expired / Lapsed
US
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Submarine periscope seal
Assignee: Individual
•
Filing: 1950-02-09
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Granted: 1957-05-07
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Expires: 1970-02-09
Abstract
No abstract record available.
Inventors
- 👤 Janise Fabus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:04
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/182; F16J15/183; Y; Y10; Y10S; Y10S277/00; Y10S277/908; Y10S277/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL14945C
Cited
US271748A
Cited
US301998A
Cited
US528773A
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GB189417397A
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US731156A
Cited
FR328884A
Cited
US727839A
Cited
US1298333A
Cited
GB230546A
Cited
GB428782A
Cited
US2173192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-06 | 1960-11-05 | 1961-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-06 | 1964-11-05 | 1965-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-06 | 1968-11-05 | 1969-05-07 | $7700.00 | Window Closed / Lapsed |