Patent US2221598A successfully refreshed from Google Patents.
US2221598A
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Machine and method for making nut blanks
Assignee: BUFFALO BOLT Co
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Filing: 1938-12-21
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Granted: 1940-11-12
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Expires: 1958-12-21
Abstract
No abstract record available.
Inventors
- 👤 John J Mclaughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:22
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/64; B21K1/66; Y; Y10; Y10T; Y10T83/00; Y10T83/081; Y10T83/091; Y10T83/096; Y10T83/098; Y10T83/444; Y10T83/4475; Y10T83/4478; Y10T83/647; Y10T83/6476; Y10T83/6484; Y10T83/869; Y10T83/8737; Y10T83/874
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) | 1943-11-12 | 1944-05-13 | 1944-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-12 | 1948-05-13 | 1948-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-12 | 1952-05-13 | 1952-11-12 | $7700.00 | Window Closed / Lapsed |