US2791136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indexing drum for drill press
Assignee: AO Smith Corp
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Filing: 1953-07-01
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Granted: 1957-05-07
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Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 George M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:00
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/56; B23Q1/60; B23Q1/62; B23Q1/621; B23Q16/00; B23Q16/006; B23Q35/00; B23Q35/02; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/561; Y10T408/5617; Y10T409/00; Y10T409/30; Y10T409/30868; Y10T409/308792; Y10T74/00; Y10T74/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-06 | 1960-11-05 | 1961-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-06 | 1964-11-05 | 1965-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-06 | 1968-11-05 | 1969-05-07 | $7700.00 | Window Closed / Lapsed |