US2769365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counting device for microscopic particles
Assignee: Individual
•
Filing: 1951-11-08
•
Granted: 1956-11-06
•
Expires: 1971-11-08
Abstract
No abstract record available.
Inventors
- 👤 Loeschcke Hans
- 👤 Wever Rutger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:55
CPC Classifications
H; H03; H03K; H03K21/00; G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/49; G01N21/51; G01N15/00; G01N15/06; G01N15/10; G01N15/14; G01N2015/1486
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2064517A
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GB479662A
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US2157438A
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US2254062A
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FR856507A
Cited
US2313218A
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US2324449A
Cited
US2311101A
Cited
US2333791A
Cited
US2379158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |