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US2464307A
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US
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Assignee: Individual
•
Filing: 1945-12-04
•
Granted: 1949-03-15
•
Expires: 1965-12-04
Abstract
No abstract record available.
Inventors
- 👤 Robert R Griffin
- 👤 Marcelle P Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:32
CPC Classifications
A; A47; A47J; A47J29/00; A47J29/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE315419C
Cited
GB190227651A
Cited
GB190408793A
Cited
US1234407A
Cited
US1335306A
Cited
US1433824A
Cited
US2314872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |