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US3199481A
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Insulating article
Assignee: Midwest Canvas Corp
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Filing: 1961-12-18
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Granted: 1965-08-10
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Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Gary R Handwerker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:06
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/78; E04G; E04G21/00; E04G21/24; E04G21/28; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033; Y10T428/24149; Y10T428/24157
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1569955A
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US1963177A
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US2137756A
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US2495636A
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US2593373A
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US2844501A
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US2927626A
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US3020183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |