Patent US2598907A successfully refreshed from Google Patents.
US2598907A
Expired / Lapsed
US
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Two-hand fluid pressure control of power machinery
Assignee: National Pneumatic Co Inc
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Filing: 1949-03-03
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Granted: 1952-06-03
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Expires: 1969-03-03
Abstract
No abstract record available.
Inventors
- 👤 James J Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:12
CPC Classifications
F; F16; F16P; F16P3/00; F16P3/18; F16P3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1829184A
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US1776679A
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US2013102A
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US1946348A
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US2105253A
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US2346829A
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US2423482A
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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) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |