US2503076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1945-10-31
•
Granted: 1950-04-04
•
Expires: 1965-10-31
Abstract
No abstract record available.
Inventors
- 👤 Harold J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:19
CPC Classifications
E; E05; E05D; E05D13/00; E05D13/04; E05D13/06; E05D13/10; E05D13/12; E05D13/123; E05D13/1246; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0876; Y10T292/0878; Y10T292/0879; Y10T292/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US15557A
Cited
US435683A
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US681379A
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US1409573A
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US1470952A
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US1554494A
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US1592515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |