Patent US2380983A successfully refreshed from Google Patents.
US2794293A
Expired / Lapsed
US
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Block construction
Assignee: Individual
•
Filing: 1954-04-07
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Granted: 1957-06-04
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Expires: 1974-04-07
Abstract
No abstract record available.
Inventors
- 👤 Milrod Murray
- 👤 Robert W C Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:50
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/10; A63H33/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US101179A
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US604708A
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US691049A
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US669029A
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US1608273A
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US1800628A
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GB379836A
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US2023300A
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US2204319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |