Patent US3132396A successfully refreshed from Google Patents.
US3132396A
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Assignee: PENN CHEM CORP
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Filing: 1961-11-01
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Granted: 1964-05-12
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Expires: 1981-11-01
Abstract
No abstract record available.
Inventors
- 👤 Herbert I Berman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:36
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/02; F16L33/03; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/149; Y10T24/15; Y10T24/44; Y10T24/44641; Y10T24/44744; Y10T24/44752
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US237976A
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US282466A
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US596642A
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US1245892A
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US1281469A
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US1451206A
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US2524562A
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US2628396A
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US2947055A
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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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |