Patent US1018230A successfully refreshed from Google Patents.
US1018230A
Expired / Lapsed
US
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Announcement-slide for stereopticons.
Assignee: Individual
•
Filing: 1911-09-16
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Granted: 1912-02-20
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Expires: 1931-09-16
Abstract
No abstract record available.
Inventors
- 👤 Charles E Battershall
- 👤 Frank L Oleson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:01
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/64
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) | 1915-02-19 | 1915-08-21 | 1916-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-02-19 | 1919-08-21 | 1920-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-02-19 | 1923-08-21 | 1924-02-20 | $7700.00 | Window Closed / Lapsed |