US2856112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder brackets
Assignee: Individual
•
Filing: 1952-12-29
•
Granted: 1958-10-14
•
Expires: 1972-12-29
Abstract
No abstract record available.
Inventors
- 👤 Broderick Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:35
CPC Classifications
E; E06; E06C; E06C1/00; E06C1/02; E06C1/34; E06C1/345; E06C7/00; E06C7/16; E06C7/48; E06C7/488
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US607323A
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US843989A
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US1494305A
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US1508392A
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US1522292A
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US1760803A
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DE819909C
Cited
US2680554A
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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) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |