Patent US494255A successfully refreshed from Google Patents.
US494255A
Expired / Lapsed
US
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Imitation mother-of-pearl and method of making same
Assignee: —
•
Filing: —
•
Granted: 1893-03-28
•
Expires: 1910-03-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:11
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/714; Y; Y10; Y10S; Y10S264/00; Y10S264/31; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/31504; Y10T428/31678; Y10T428/31714
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) | 1896-03-27 | 1896-09-26 | 1897-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1900-03-28 | 1900-09-27 | 1901-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1904-03-28 | 1904-09-27 | 1905-03-29 | $7700.00 | Window Closed / Lapsed |