US2999541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Milling tool
Assignee: KINZBACH TOOL Co Inc
•
Filing: 1957-10-11
•
Granted: 1961-09-12
•
Expires: 1977-10-11
Abstract
No abstract record available.
Inventors
- 👤 Robert B Kinzbach
- 👤 Strecker William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:35
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/54; E21B10/60; E21B10/602
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |