Patent US2470540A successfully refreshed from Google Patents.
US2470540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective sleeve for pump rods
Assignee: Mission Manufacturing Co
•
Filing: 1943-10-08
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Granted: 1949-05-17
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Expires: 1963-10-08
Abstract
No abstract record available.
Inventors
- 👤 Henry B Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:20
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/14; F04B53/144; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2142
Claims Analysis
Total Claims: 0
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US1732366A
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US2081040A
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US2042078A
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US2048320A
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US2164159A
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US2310405A
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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) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |