US1548730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for milling threads
Assignee: Individual
•
Filing: 1921-01-26
•
Granted: 1925-08-04
•
Expires: 1941-01-26
Abstract
No abstract record available.
Inventors
- 👤 George E Mirfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:55
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/32; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44282; Y10T279/00; Y10T279/10; Y10T279/1037; Y10T279/1041; Y10T279/1045; Y10T279/1054; Y10T279/1058; Y10T279/17; Y10T279/17564; Y10T279/17572; Y10T279/17581; Y10T279/17666; Y10T279/17692; Y10T279/17701; Y10T279/19; Y10T409/00; Y10T409/30; Y10T409/300056; Y10T409/300112; Y10T82/00; Y10T82/26; Y10T82/266; Y10T82/268
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) | 1928-08-03 | 1929-02-02 | 1929-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-08-03 | 1933-02-02 | 1933-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-08-03 | 1937-02-02 | 1937-08-04 | $7700.00 | Window Closed / Lapsed |