Patent US1883993A successfully refreshed from Google Patents.
US1883993A
Expired / Lapsed
US
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Drilling machine
Assignee: Delco Products Corp
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Filing: 1930-11-26
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Granted: 1932-10-25
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Expires: 1950-11-26
Abstract
No abstract record available.
Inventors
- 👤 John W Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:45
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/04; B23B39/08; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5127; Y10T29/513; Y10T408/00; Y10T408/36; Y10T408/365; Y10T408/367; Y10T408/375; Y10T408/378; Y10T408/3792; Y10T408/44; Y10T82/00; Y10T82/25; Y10T82/2552; Y10T82/2561
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) | 1935-10-25 | 1936-04-25 | 1936-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-10-25 | 1940-04-25 | 1940-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-10-25 | 1944-04-25 | 1944-10-25 | $7700.00 | Window Closed / Lapsed |