US2717664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal panel construction
Assignee: RICHARD RAND
•
Filing: 1949-07-18
•
Granted: 1955-09-13
•
Expires: 1969-07-18
Abstract
No abstract record available.
Inventors
- 👤 Abraham J Grafman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:51
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1610578A
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US1706769A
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DE511143C
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US2042797A
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FR769067A
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US2134008A
Cited
US2177393A
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US2117397A
Cited
US2196781A
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US2349195A
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US2457086A
Cited
US2447272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |