Patent US1516897A successfully refreshed from Google Patents.
US1516897A
Expired / Lapsed
US
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Pantograph engraving tool
Assignee: C D TUSKA Co
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Filing: 1923-06-13
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Granted: 1924-11-25
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Expires: 1943-06-13
Abstract
No abstract record available.
Inventors
- 👤 Clarence D Tuska
- 👤 Percival H Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:00
CPC Classifications
B; B44; B44B; B44B3/00; B44B3/001; B44B3/002; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/306664; Y10T409/306776; Y10T409/306832
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) | 1927-11-25 | 1928-05-26 | 1928-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-11-25 | 1932-05-26 | 1932-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-11-25 | 1936-05-26 | 1936-11-25 | $7700.00 | Window Closed / Lapsed |