US2871582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined writing plate and price calculator
Assignee: Individual
•
Filing: 1955-01-06
•
Granted: 1959-02-03
•
Expires: 1975-01-06
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:23
CPC Classifications
G; G06; G06G; G06G1/00; G06G1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US381703A
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DE328140C
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US736481A
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US922465A
Cited
GB190923705A
Cited
GB191116198A
Cited
US1157609A
Cited
US1346930A
Cited
US1611181A
Cited
US2073352A
Cited
US2130966A
Cited
GB544724A
Cited
US2642225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |