US1833236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: HARDSOCG WONDER DRILL CO
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Filing: 1931-05-15
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Granted: 1931-11-24
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Expires: 1951-05-15
Abstract
No abstract record available.
Inventors
- 👤 George W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:00
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/08; B25D17/082; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17042; Y10T279/17051; Y10T279/17085; Y10T279/17923; Y10T403/00; Y10T403/60; Y10T403/602
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) | 1934-11-23 | 1935-05-25 | 1935-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-11-23 | 1939-05-25 | 1939-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-11-23 | 1943-05-25 | 1943-11-24 | $7700.00 | Window Closed / Lapsed |