Patent US2433873A successfully refreshed from Google Patents.
US2433873A
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US
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Assignee: Individual
•
Filing: 1941-10-01
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Granted: 1948-01-06
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Expires: 1961-10-01
Abstract
No abstract record available.
Inventors
- 👤 Chester W Tawney
- 👤 Jr Salvatore J Demarco
- 👤 Percy H Herrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:38
CPC Classifications
G; G07; G07F; G07F11/00; G07F11/46; G07F11/50; G07F11/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1321385A
Cited
US825555A
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US1264603A
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US1517066A
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US1744679A
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US1893708A
Cited
US1723497A
Cited
US1969590A
Cited
GB411129A
Cited
US2099267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-05 | 1951-07-07 | 1952-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-05 | 1955-07-07 | 1956-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-05 | 1959-07-07 | 1960-01-06 | $7700.00 | Window Closed / Lapsed |