US2813338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1953-06-05
•
Granted: 1957-11-19
•
Expires: 1973-06-05
Abstract
No abstract record available.
Inventors
- 👤 Meyers Mae Estelle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:42
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB124329A
Cited
US1859569A
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US2013603A
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US2007986A
Cited
US2408571A
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US2438730A
Cited
US2546836A
Cited
US2545935A
Cited
US2674804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |