US2842850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable rule
Assignee: Individual
•
Filing: 1955-02-03
•
Granted: 1958-07-15
•
Expires: 1975-02-03
Abstract
No abstract record available.
Inventors
- 👤 Martin O Anderson
- 👤 Elmer H Troselius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:51
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/02; G01B3/04; G01B3/06; F; F16; F16C; F16C11/00; F16C11/04; F16C11/10; F16C2370/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1248174A
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US1512728A
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US1488482A
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US1983651A
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US1998018A
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US2021202A
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US2633641A
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US2655730A
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US2723458A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |