Patent US4612488A successfully refreshed from Google Patents.
Patent US1407668A successfully refreshed from Google Patents.
US1407668A
Expired / Lapsed
US
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Interchangeable tool-holder ferrule
Assignee: Individual
•
Filing: 1918-12-12
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Granted: 1922-02-21
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Expires: 1938-12-12
Abstract
No abstract record available.
Inventors
- 👤 Mccallum Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:06
CPC Classifications
B; B25; B25G; B25G3/00; B25G3/02; B25G3/12; B25G3/26; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17821; Y10T279/17846
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) | 1925-02-20 | 1925-08-22 | 1926-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-02-20 | 1929-08-22 | 1930-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-02-20 | 1933-08-22 | 1934-02-21 | $7700.00 | Window Closed / Lapsed |