US2266393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper drill
Assignee: SMEAD Manufacturing Co Inc
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Filing: 1940-10-14
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Granted: 1941-12-16
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Expires: 1960-10-14
Abstract
No abstract record available.
Inventors
- 👤 Harold J Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:16
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/32; Y; Y10; Y10T; Y10T408/00; Y10T408/50; Y10T408/65; Y10T408/655; Y10T408/89; Y10T408/892; Y10T408/8928
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) | 1944-12-15 | 1945-06-16 | 1945-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-15 | 1949-06-16 | 1949-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-15 | 1953-06-16 | 1953-12-16 | $7700.00 | Window Closed / Lapsed |