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Patent US783889A successfully refreshed from Google Patents.
US783889A
Expired / Lapsed
US
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Cupping-die.
Assignee: PERKINS Corp
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Filing: 1904-06-04
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Granted: 1905-02-28
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Expires: 1924-06-04
Abstract
No abstract record available.
Inventors
- 👤 Charles G Perkins
- 👤 Ellsworth A La Har
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:59
CPC Classifications
B; B31; B31B; B31B50/00; B31B50/59; B31B2100/00; B31B2100/002; B31B2100/0024; B31B2110/00; B31B2110/20; B31B50/26; B31B50/44
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) | 1908-02-28 | 1908-08-29 | 1909-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-02-28 | 1912-08-29 | 1913-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-02-28 | 1916-08-29 | 1917-02-28 | $7700.00 | Window Closed / Lapsed |