US2877530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monolithic wall forming apparatus
Assignee: Individual
•
Filing: 1955-07-25
•
Granted: 1959-03-17
•
Expires: 1975-07-25
Abstract
No abstract record available.
Inventors
- 👤 Jr James B Winn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:05
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/84; E04B2/842; E04B1/00; E04B1/32; E04B1/3211; E04G; E04G11/00; E04G11/06; E04G11/20; E04B2001/3217; E04B2001/3258; E04B2001/3264; Y; Y10; Y10S; Y10S425/00; Y10S425/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1103863A
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US1140785A
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US1167797A
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US1219968A
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US1292906A
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US1389044A
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US1534008A
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US1514936A
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US1640417A
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US1894676A
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US1995692A
Cited
US2607100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |