Patent US2047136A successfully refreshed from Google Patents.
US2047136A
Expired / Lapsed
US
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Fabrication of leather boards and thinner leather sheets
Assignee: Sturtevant Mill Co
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Filing: 1935-10-24
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Granted: 1936-07-07
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Expires: 1955-10-24
Abstract
No abstract record available.
Inventors
- 👤 William T Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:29
CPC Classifications
C; C08; C08L; C08L89/00; C08L89/04; C08L89/06; Y; Y10; Y10S; Y10S264/00; Y10S264/38
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) | 1939-07-07 | 1940-01-06 | 1940-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-07 | 1944-01-06 | 1944-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-07 | 1948-01-06 | 1948-07-07 | $7700.00 | Window Closed / Lapsed |