Patent US721797A successfully refreshed from Google Patents.
US721797A
Expired / Lapsed
US
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Portable drill-press.
Assignee: Individual
•
Filing: 1901-12-03
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Granted: 1903-03-03
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Expires: 1921-12-03
Abstract
No abstract record available.
Inventors
- 👤 Oscar Gustafsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:15
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/03; B28; B28D; B28D1/00; B28D1/14; B28D1/143; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/561; Y10T408/5614; Y10T408/5626; Y10T408/5627; Y10T408/56275
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) | 1906-03-02 | 1906-09-01 | 1907-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-03-02 | 1910-09-01 | 1911-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-03-02 | 1914-09-01 | 1915-03-03 | $7700.00 | Window Closed / Lapsed |