Patent US1380640A successfully refreshed from Google Patents.
US1380640A
Expired / Lapsed
US
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Manufacture of rubber
Assignee: Individual
•
Filing: 1920-02-24
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Granted: 1921-06-07
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Expires: 1940-02-24
Abstract
No abstract record available.
Inventors
- 👤 Davidson Samuel Cleland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:07
CPC Classifications
F; F02; F02M; F02M1/00; F02M1/04; C; C08; C08C; C08C1/00; C08C1/14; F02M11/00; F02M11/06; F02M3/00; F02M3/08; F02M7/00; F02M7/12; G; G01; G01F; G01F9/00; G01F9/02; G01F9/026; Y; Y10; Y10S; Y10S528/00; Y10S528/931; Y10S528/934; Y10S528/936
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) | 1924-06-06 | 1924-12-06 | 1925-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-06-06 | 1928-12-06 | 1929-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-06-06 | 1932-12-06 | 1933-06-07 | $7700.00 | Window Closed / Lapsed |