Patent US2498090A successfully refreshed from Google Patents.
US2498090A
Expired / Lapsed
US
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Lubricator
Assignee: Individual
•
Filing: 1944-12-01
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Granted: 1950-02-21
•
Expires: 1964-12-01
Abstract
No abstract record available.
Inventors
- 👤 Macindoe John Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:53
CPC Classifications
F; F16; F16N; F16N7/00; F16N11/00; F16N11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US906720A
Cited
US1168646A
Cited
US1222851A
Cited
US1283841A
Cited
US1686241A
Cited
US2359905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |