Patent US2207745A successfully refreshed from Google Patents.
US2207745A
Expired / Lapsed
US
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Window frame construction
Assignee: Robert Mitchell Co Ltd
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Filing: 1937-06-21
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Granted: 1940-07-16
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Expires: 1957-06-21
Abstract
No abstract record available.
Inventors
- 👤 Solomon G Lipsett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:19
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/66; E06B3/677
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-07-16 | 1944-01-15 | 1944-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-16 | 1948-01-15 | 1948-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-16 | 1952-01-15 | 1952-07-16 | $7700.00 | Window Closed / Lapsed |