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US2740170A
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Window structure
Assignee: IND MACHINE TOOL Co
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Filing: 1952-06-05
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Granted: 1956-04-03
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Expires: 1972-06-05
Abstract
No abstract record available.
Inventors
- 👤 Elmer A Westman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:35
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/50; E06B3/5009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1659103A
Cited
US2090133A
Cited
US2293944A
Cited
US2383912A
Cited
US2313827A
Cited
US2444311A
Cited
US2478044A
Cited
US2478061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |