US2937666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal tube seal
Assignee: Individual
•
Filing: 1957-05-31
•
Granted: 1960-05-24
•
Expires: 1977-05-31
Abstract
No abstract record available.
Inventors
- 👤 Maisch Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:57
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/136
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US543745A
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US546258A
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US1068793A
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US1466450A
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US1463824A
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US1949498A
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US2315623A
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US2475748A
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US2564232A
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US2488796A
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US2607370A
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US2695632A
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US2763910A
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US2764184A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |