US2993616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible closure
Assignee: COLUMBUS BOLT AND FORGING CO
•
Filing: 1959-06-04
•
Granted: 1961-07-25
•
Expires: 1979-06-04
Abstract
No abstract record available.
Inventors
- 👤 Jr William A Carlile
- 👤 William M O'leary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US624363A
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US1495000A
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US2393747A
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DE913330C
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GB750231A
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US2763293A
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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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |