US2180289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling and honing machinery
Assignee: Carlton Machine Tool Co
•
Filing: 1938-07-25
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Granted: 1939-11-14
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Expires: 1958-07-25
Abstract
No abstract record available.
Inventors
- 👤 Jack C Carlton
- 👤 Albert C Spangenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:06
CPC Classifications
B; B23; B23B; B23B39/00; B23B39/12; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5104; Y10T29/5105; Y10T408/00; Y10T408/31; Y10T408/65; Y10T408/675; Y10T408/6771; Y10T408/6774
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) | 1942-11-13 | 1943-05-15 | 1943-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-11-13 | 1947-05-15 | 1947-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-11-13 | 1951-05-15 | 1951-11-14 | $7700.00 | Window Closed / Lapsed |