US2533975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hammer
Assignee: Nordberg Manufacturing Co
•
Filing: 1946-04-15
•
Granted: 1950-12-12
•
Expires: 1966-04-15
Abstract
No abstract record available.
Inventors
- 👤 Henry H Talboys
- 👤 Helmer E Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:12
CPC Classifications
B; B25; B25D; B25D11/00; B25D11/06; B25D11/066; B25D11/068
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US758323A
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US904868A
Cited
US1632255A
Cited
US1632937A
Cited
US1707887A
Cited
US1824955A
Cited
DE552884C
Cited
US2025318A
Cited
US2248523A
Cited
US2233913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |