Patent US2633612A successfully refreshed from Google Patents.
US2633612A
Expired / Lapsed
US
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Window construction
Assignee: WOODLIN METAL PRODUCTS Co
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Filing: 1949-01-10
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Granted: 1953-04-07
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Expires: 1969-01-10
Abstract
No abstract record available.
Inventors
- 👤 Walter J Woodhams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:31
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1639148A
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US1906997A
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US2003856A
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US2105735A
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US2119667A
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US2174781A
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US2246075A
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US2256588A
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US2452815A
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US2467604A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |