US1332437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for grinding internal and external surfaces to fit
Assignee: Individual
•
Filing: 1918-07-26
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Granted: 1920-03-02
•
Expires: 1938-07-26
Abstract
No abstract record available.
Inventors
- 👤 Sumner A Ely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:36
CPC Classifications
B; B24; B24B; B24B17/00; B24B17/02; B23; B23Q; B23Q1/00; B23Q27/00; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/102; B24B5/00; B24B5/02; B24B5/14
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) | 1923-03-02 | 1923-09-01 | 1924-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-03-02 | 1927-09-01 | 1928-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-03-02 | 1931-09-01 | 1932-03-02 | $7700.00 | Window Closed / Lapsed |