US1587092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boring tool
Assignee: DRESSER BROTHERS VAN
•
Filing: 1920-12-20
•
Granted: 1926-06-01
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Expires: 1940-12-20
Abstract
No abstract record available.
Inventors
- 👤 William C Van Dresser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:10
CPC Classifications
B; B23; B23Q; B23Q9/00; B23Q2709/00; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/675; Y10T408/6779; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/1967
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) | 1929-05-31 | 1929-11-30 | 1930-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-05-31 | 1933-11-30 | 1934-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-05-31 | 1937-11-30 | 1938-06-01 | $7700.00 | Window Closed / Lapsed |