US2488937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic material setting apparatus
Assignee: Individual
•
Filing: 1948-02-10
•
Granted: 1949-11-22
•
Expires: 1968-02-10
Abstract
No abstract record available.
Inventors
- 👤 John E Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:12
CPC Classifications
D; D06; D06C; D06C29/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1583333A
Cited
US1669774A
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US2225166A
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US2291131A
Cited
US2322957A
Cited
US2362947A
Cited
US2433121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |