US2896579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valve construction for pneumatic power tools
Assignee: Individual
•
Filing: 1957-09-09
•
Granted: 1959-07-28
•
Expires: 1977-09-09
Abstract
No abstract record available.
Inventors
- 👤 Lee R Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:06
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/04; F; F15; F15B; F15B13/00; F15B13/12; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2722234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |