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Patent US2469840A successfully refreshed from Google Patents.
US2469840A
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Assignee: Individual
•
Filing: 1946-05-09
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Granted: 1949-05-10
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Expires: 1966-05-09
Abstract
No abstract record available.
Inventors
- 👤 Herbert P Orth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:25
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/14; E04D13/1407; E04D13/1415
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1566750A
Cited
US1091611A
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US1218937A
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US1452412A
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US2027133A
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US2168204A
Cited
US2250548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |