US2948470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particle counter
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1957-03-15
•
Granted: 1960-08-09
•
Expires: 1977-03-15
Abstract
No abstract record available.
Inventors
- 👤 Berkley Carl
- 👤 Hyman P Mansberg
- 👤 George N Thomas
- 👤 Yamagami Yonehisa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:00
CPC Classifications
G; G06; G06M; G06M11/00; G06M11/02; G06M11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2789765A
Cited
US2791695A
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US2731202A
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US2731204A
Cited
US2791377A
Cited
US2712065A
Cited
GB739902A
Cited
US2756627A
Cited
US2791697A
Cited
US2873363A
Cited
US2803406A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |