US2857646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Form for concrete stoop
Assignee: Individual
•
Filing: 1952-12-12
•
Granted: 1958-10-28
•
Expires: 1972-12-12
Abstract
No abstract record available.
Inventors
- 👤 Bernard J Mcloughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:47
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/22; B28B7/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US950567A
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US959438A
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US1041551A
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US1427276A
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US1586440A
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GB448353A
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US2255480A
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US2477320A
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US2537396A
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US2688786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |