US2717004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple valve
Assignee: Page Oil Tools Inc
•
Filing: 1949-04-18
•
Granted: 1955-09-06
•
Expires: 1969-04-18
Abstract
No abstract record available.
Inventors
- 👤 John S Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:09
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/52; F16K1/526; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87096; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US628060A
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US679927A
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US1793514A
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US1668859A
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US1637230A
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US1590068A
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US1733421A
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US1753154A
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US2079195A
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US2173819A
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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) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |