US1902571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for extracting tubes
Assignee: Individual
•
Filing: 1931-09-17
•
Granted: 1933-03-21
•
Expires: 1951-09-17
Abstract
No abstract record available.
Inventors
- 👤 David F Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:52
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/026; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53796; Y10T29/5383; Y10T29/53848; Y10T29/53857; Y10T29/53878; Y10T29/53883; Y10T29/53909; Y10T29/53943; Y10T29/53952; Y10T29/53957
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) | 1936-03-20 | 1936-09-19 | 1937-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-03-20 | 1940-09-19 | 1941-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-03-20 | 1944-09-19 | 1945-03-21 | $7700.00 | Window Closed / Lapsed |