Patent US2087470A successfully refreshed from Google Patents.
US2087470A
Expired / Lapsed
US
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Method of making buttons from plastic material
Assignee: Bakelite Corp
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Filing: 1934-02-17
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Granted: 1937-07-20
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Expires: 1954-02-17
Abstract
No abstract record available.
Inventors
- 👤 William M Davidson
- 👤 Thomas B Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:33
CPC Classifications
B; B29; B29D; B29D19/00; B29D19/04; B29C; B29C33/00; B29C33/0033; B29C37/00; B29C37/02; B29C43/00; B29L; B29L2019/00; Y; Y10; Y10S; Y10S264/00; Y10S264/34
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) | 1940-07-19 | 1941-01-18 | 1941-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-19 | 1945-01-18 | 1945-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-19 | 1949-01-18 | 1949-07-20 | $7700.00 | Window Closed / Lapsed |