US2499644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1944-11-16
•
Granted: 1950-03-07
•
Expires: 1964-11-16
Abstract
No abstract record available.
Inventors
- 👤 Victor H Heyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:32
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/10; B25B13/12; B25B13/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1193509A
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US1404729A
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FR352961A
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US988142A
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US1244126A
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US1396387A
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US1402686A
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US1522432A
Cited
US1666091A
Cited
US2112840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |