US2622899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating and recording device
Assignee: ROBERT EDWIN MCLEOD
•
Filing: 1950-08-07
•
Granted: 1952-12-23
•
Expires: 1970-08-07
Abstract
No abstract record available.
Inventors
- 👤 Abrams Ruby Kathryn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:57
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/66; G01N33/52; G01N33/528
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US570408A
Cited
US689667A
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US801119A
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US1425513A
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US1341018A
Cited
US1537891A
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US1597280A
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US2285214A
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US2487275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |