US2835440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash reading indicating means for registers
Assignee: Comptometer Corp
•
Filing: 1953-09-01
•
Granted: 1958-05-20
•
Expires: 1973-09-01
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:04
CPC Classifications
G; G06; G06C; G06C11/00; G06C11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1877801A
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US2346601A
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US2549512A
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US627791A
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US789410A
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US1999727A
Cited
US1196885A
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US2356107A
Cited
US2584810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |