US2633946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabricated flush door
Assignee: Kawneer Co Inc
•
Filing: 1949-12-29
•
Granted: 1953-04-07
•
Expires: 1969-12-29
Abstract
No abstract record available.
Inventors
- 👤 Charles B Huizenga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:42
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/70; E06B3/88; E06B3/72; E06B3/54; E06B3/58; E06B3/585; E06B3/5857; E06B3/5864; E06B3/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE262934C
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US871679A
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US990151A
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US1270014A
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US1200639A
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US1554774A
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US2142438A
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US2197150A
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GB515085A
Cited
US2219688A
Cited
US2244491A
Cited
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 |