Patent US3443984A successfully refreshed from Google Patents.
US3443984A
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Method of coating tubular object with polyurethane foam
Assignee: POLYURETHAE TECHNOLOGY OF AMERICA- MARTIN SWEETS COMPANY Inc
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Filing: 1964-03-27
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Granted: 1969-05-13
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Expires: 1984-03-27
Abstract
No abstract record available.
Inventors
- 👤 Sherman Alan Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:38
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14; F16L59/141; B; B05; B05D; B05D7/00; B05D7/14; F16L59/02; F16L59/027; B05D1/00; B05D1/34; B05D2254/00; B05D2254/02; B05D2503/00; B05D3/00; B05D3/02; B05D3/0218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2332538A
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US3068532A
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US3079641A
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US3054142A
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US3208868A
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US3170968A
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US3206802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |