US2663484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder bracket
Assignee: Individual
•
Filing: 1947-12-11
•
Granted: 1953-12-22
•
Expires: 1967-12-11
Abstract
No abstract record available.
Inventors
- 👤 Macpherson William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:42
CPC Classifications
E; E04; E04G; E04G5/00; E04G5/04; E04G5/041; E04G5/046; E04G1/00; E04G1/28; E04G1/30; E04G2001/302; E04G2001/305; Y; Y10; Y10T; Y10T24/00; Y10T24/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE88292C
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US245682A
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US770685A
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US1226858A
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US1211868A
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US1239472A
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US2116831A
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US2272349A
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US2503137A
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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) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |