US2495877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: LEO DEMSEY
•
Filing: 1945-10-06
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Granted: 1950-01-31
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Expires: 1965-10-06
Abstract
No abstract record available.
Inventors
- 👤 Milton R Theilman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:55
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/46; E06B3/4681
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1435039A
Cited
US1821674A
Cited
GB447331A
Cited
US2118213A
Cited
US2149644A
Cited
US2274730A
Cited
US2402247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |