Patent US2939386A successfully refreshed from Google Patents.
US2939386A
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US
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Assignee: NEW METHOD STEEL STAMPS Inc
•
Filing: 1955-12-12
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Granted: 1960-06-07
•
Expires: 1975-12-12
Abstract
No abstract record available.
Inventors
- 👤 Richard H Norris
- 👤 Carl O Malmstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:17
CPC Classifications
B; B44; B44B; B44B5/00; B44B5/0047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US425807A
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US1258215A
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US1490709A
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US1978330A
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US2357797A
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US2370184A
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US2399397A
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US2424006A
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US2417865A
Cited
US2610576A
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US2676534A
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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) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |