US2927219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for counting discrete particles
Assignee: Individual
•
Filing: 1953-02-10
•
Granted: 1960-03-01
•
Expires: 1973-02-10
Abstract
No abstract record available.
Inventors
- 👤 Young John Zachary
- 👤 Roberts Francis Freder William
- 👤 Causley David James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:23
CPC Classifications
G; G06; G06M; G06M11/00; G06M11/02; G06M11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2415191A
Cited
US2427319A
Cited
US2443722A
Cited
US2494441A
Cited
US2661902A
Cited
US2789765A
Cited
US2791695A
Cited
US2791377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |