US1809975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helical bladed reamer
Assignee: WATERVLIET TOOL CO Inc
•
Filing: 1926-05-13
•
Granted: 1931-06-16
•
Expires: 1946-05-13
Abstract
No abstract record available.
Inventors
- 👤 William J Kattrein
- 👤 Frederick W Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:53
CPC Classifications
B; B23; B23D; B23D77/00; B23D77/02; B23D77/04; B23D77/042; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8588; Y10T408/85892; Y10T408/85894; Y10T408/858945
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) | 1934-06-15 | 1934-12-15 | 1935-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-06-15 | 1938-12-15 | 1939-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-06-15 | 1942-12-15 | 1943-06-16 | $7700.00 | Window Closed / Lapsed |