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US1729131A
Expired / Lapsed
US
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Holder for pressure-fluid-operated tools
Assignee: WILLIAM H KELLER Inc
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Filing: 1925-05-11
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Granted: 1929-09-24
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Expires: 1945-05-11
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Shaff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:57
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/30; B25; B25B; B25B11/00; B25B11/005; B25B11/007
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) | 1932-09-23 | 1933-03-25 | 1933-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-09-23 | 1937-03-25 | 1937-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-09-23 | 1941-03-25 | 1941-09-24 | $7700.00 | Window Closed / Lapsed |