Patent US2771599A successfully refreshed from Google Patents.
US2771599A
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Readout mechanism
Assignee: MARCHANT CALCULATORS Inc
•
Filing: 1953-03-06
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Granted: 1956-11-20
•
Expires: 1973-03-06
Abstract
No abstract record available.
Inventors
- 👤 George V Nolde
- 👤 Harold T Avery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:16
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/04; G09G3/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2002219A
Cited
US1498544A
Cited
US2082725A
Cited
US2010158A
Cited
US2116372A
Cited
US2294464A
Cited
US2308306A
Cited
US2416369A
Cited
US2358477A
Cited
US2338242A
Cited
US2481221A
Cited
US2668870A
Cited
US2510072A
Cited
US2608346A
Cited
US2523300A
Cited
US2514054A
Cited
US2555622A
Cited
US2652196A
Cited
US2647250A
Cited
US2643290A
Cited
US2617870A
Cited
US2629927A
Cited
US2694801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |