US2683985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scale
Assignee: Productive Inventions Inc
•
Filing: 1945-03-23
•
Granted: 1954-07-20
•
Expires: 1965-03-23
Abstract
No abstract record available.
Inventors
- 👤 Theodore J Smulski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:13
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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DE112519C
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US1233124A
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US1501698A
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DE435192C
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US1579849A
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US1724734A
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FR739948A
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US2059246A
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FR786861A
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CH182110A
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US2359245A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |