US2909355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hanger
Assignee: Individual
•
Filing: 1955-04-26
•
Granted: 1959-10-20
•
Expires: 1975-04-26
Abstract
No abstract record available.
Inventors
- 👤 David V Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:28
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/18; E04B2009/186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US704788A
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FR972372A
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US2416063A
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US2466247A
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US2585398A
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US2671625A
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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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |