Patent US1660435A successfully refreshed from Google Patents.
US1660435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-working machinery
Assignee: Individual
•
Filing: 1923-09-04
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Granted: 1928-02-28
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Expires: 1943-09-04
Abstract
No abstract record available.
Inventors
- 👤 Clarence C Craley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:08
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q16/001; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/56; B23Q1/60; B23Q1/62; B23Q1/621; B23Q16/005; Y; Y10; Y10T; Y10T408/00; Y10T408/21; Y10T408/55; Y10T408/561; Y10T408/5617; Y10T409/00; Y10T409/30; Y10T409/308624; Y10T409/30868; Y10T409/308736
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) | 1931-02-27 | 1931-08-29 | 1932-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-02-27 | 1935-08-29 | 1936-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-02-27 | 1939-08-29 | 1940-02-28 | $7700.00 | Window Closed / Lapsed |