Patent US1456233A successfully refreshed from Google Patents.
US1456233A
Expired / Lapsed
US
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Illusion appliance
Assignee: EDGAR J MARSTON
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Filing: 1919-06-06
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Granted: 1923-05-22
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Expires: 1939-06-06
Abstract
No abstract record available.
Inventors
- 👤 Louis E Hammond
- 👤 Herman A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:58
CPC Classifications
A; A63; A63J; A63J13/00; E; E04; E04H; E04H3/00; E04H3/10; E04H3/22; G; G03; G03B; G03B21/00; G03B21/54; G03B21/56
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) | 1926-05-21 | 1926-11-20 | 1927-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-05-21 | 1930-11-20 | 1931-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-05-21 | 1934-11-20 | 1935-05-22 | $7700.00 | Window Closed / Lapsed |