US2640936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for indicating the movement of material
Assignee: Individual
•
Filing: 1950-02-07
•
Granted: 1953-06-02
•
Expires: 1970-02-07
Abstract
No abstract record available.
Inventors
- 👤 Pajes Wolf Szmul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:25
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/704; G01F1/7042; G01P; G01P5/00; G01P5/005; G01P5/006; G01P5/18; G01P5/20; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1611502A
Cited
US1808709A
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US2275748A
Cited
US2377757A
Cited
US2554715A
Cited
US2453456A
Cited
US2476810A
Cited
GB615769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |