US2680267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corner element
Assignee: DAVID H SIMON
•
Filing: 1949-08-04
•
Granted: 1954-06-08
•
Expires: 1969-08-04
Abstract
No abstract record available.
Inventors
- 👤 Remstein William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:56
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0864
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US769501A
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US1800403A
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US2101589A
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US2113303A
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US2128824A
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US2232075A
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US2241898A
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US2291171A
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US2357367A
Cited
US2519950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |