Patent US3129191A successfully refreshed from Google Patents.
US3129191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric foams
Assignee: De Bell and Richardson Inc
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Filing: 1960-03-09
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Granted: 1964-04-14
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Expires: 1980-03-09
Abstract
No abstract record available.
Inventors
- 👤 Mortimer H Nickerson
- 👤 Herbert S Schnitzer
- 👤 Curtis John Eliot
- 👤 George D Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:50
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0066; H; H01; H01Q; H01Q15/00; H01Q15/02; H01Q15/08; C08J2363/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |