Patent US926247A successfully refreshed from Google Patents.
US926247A
Expired / Lapsed
US
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Magnetic t-square.
Assignee: Individual
•
Filing: 1908-02-13
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Granted: 1909-06-29
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Expires: 1928-02-13
Abstract
No abstract record available.
Inventors
- 👤 James C Draper
- 👤 Joseph W Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:49
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/02; B43L13/04; B43L13/048; Y; Y10; Y10S; Y10S33/00; Y10S33/01
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) | 1912-06-28 | 1912-12-28 | 1913-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-06-28 | 1916-12-28 | 1917-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-06-28 | 1920-12-28 | 1921-06-29 | $7700.00 | Window Closed / Lapsed |