US2591688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sand ridding device
Assignee: ROLLER RIDDLE CORP
•
Filing: 1946-05-04
•
Granted: 1952-04-08
•
Expires: 1966-05-04
Abstract
No abstract record available.
Inventors
- 👤 Faulkner Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:37
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/06; B07; B07B; B07B1/00; B07B1/28; B07B1/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1306325A
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US1230477A
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US1426270A
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US1485946A
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GB284642A
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US1860022A
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US1962734A
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US2049870A
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US2106742A
Cited
US2297700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |