Patent US3765870A successfully refreshed from Google Patents.
Patent US2087174A successfully refreshed from Google Patents.
US2087174A
Expired / Lapsed
US
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Pump rod and valve adjuster and spacer
Assignee: BRUCE STANFORD
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Filing: 1936-08-29
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Granted: 1937-07-13
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Expires: 1956-08-29
Abstract
No abstract record available.
Inventors
- 👤 Clifford E Van Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:50
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/02; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32057; Y10T403/32065; Y10T403/32254; Y10T403/32262; Y10T403/53; Y10T403/535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-07-12 | 1941-01-11 | 1941-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-12 | 1945-01-11 | 1945-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-12 | 1949-01-11 | 1949-07-13 | $7700.00 | Window Closed / Lapsed |