US1533437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Educational device
Assignee: MACY ART PROCESS Corp
•
Filing: 1921-04-11
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Granted: 1925-04-14
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Expires: 1941-04-11
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Macy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:32
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/006; G02C3/00; G02C3/04; G02C5/008; G02C7/00; G02C7/10; G02C7/104; G02C2200/00; G02C2200/12
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) | 1928-04-13 | 1928-10-13 | 1929-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-04-13 | 1932-10-13 | 1933-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-04-13 | 1936-10-13 | 1937-04-14 | $7700.00 | Window Closed / Lapsed |