US2606738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical plug with renewable ring seat
Assignee: Individual
•
Filing: 1946-10-11
•
Granted: 1952-08-12
•
Expires: 1966-10-11
Abstract
No abstract record available.
Inventors
- 👤 Glen Lauchlan Mckinnon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:39
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/20; F16K5/201
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1584600A
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US1616386A
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US1670691A
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GB460042A
Cited
US2173949A
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DE682227C
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US2201895A
Cited
US2373628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |