Patent US2620809A successfully refreshed from Google Patents.
US2620809A
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US
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Assignee: Individual
•
Filing: 1948-08-18
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Granted: 1952-12-09
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Expires: 1968-08-18
Abstract
No abstract record available.
Inventors
- 👤 Rosen George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:24
CPC Classifications
A; A41; A41G; A41G5/00; A41G5/004; A41G5/0053; A41G5/0073; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44641; Y10T24/44769; Y10T24/44906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US250967A
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US320928A
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US349902A
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US1169421A
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CH101188A
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US1678166A
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US1775209A
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US1886882A
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US1780766A
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US2135417A
Cited
US2165716A
Cited
US2246022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |