Patent US2138974A successfully refreshed from Google Patents.
US2138974A
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Method of making inner molds for shoes
Assignee: United Shoe Machinery Corp
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Filing: 1935-02-04
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Granted: 1938-12-06
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Expires: 1955-02-04
Abstract
No abstract record available.
Inventors
- 👤 Clifford K Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:53
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/0009; B29D35/0018; B29D35/0036; B29D35/0054; B29D35/0063; B29D35/0081; B29D35/12; B29D35/128; Y; Y10; Y10S; Y10S264/00; Y10S264/30; Y10S29/00; Y10S29/028
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) | 1941-12-05 | 1942-06-06 | 1942-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-12-05 | 1946-06-06 | 1946-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-12-05 | 1950-06-06 | 1950-12-06 | $7700.00 | Window Closed / Lapsed |