Patent US1497569A successfully refreshed from Google Patents.
Patent US307395A successfully refreshed from Google Patents.
US307395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Egbert g
Assignee: —
•
Filing: —
•
Granted: 1884-10-28
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Expires: 1901-10-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:42
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0862; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/166; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24479; Y10T428/24612
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) | 1887-10-28 | 1888-04-28 | 1888-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1891-10-28 | 1892-04-28 | 1892-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1895-10-28 | 1896-04-28 | 1896-10-28 | $7700.00 | Window Closed / Lapsed |