US2607559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for pneumatic riveting hammers
Assignee: SKILSAW Inc
•
Filing: 1944-11-03
•
Granted: 1952-08-19
•
Expires: 1964-11-03
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Forss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:12
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/16; B21J15/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2369776A
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US2330176A
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US2334686A
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US2447968A
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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) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |