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US3402140A
Expired / Lapsed
US
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Ethylene-propylene rubber compounding
Assignee: McDonnell Douglas Corp
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Filing: 1964-12-28
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Granted: 1968-09-17
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Expires: 1984-12-28
Abstract
No abstract record available.
Inventors
- 👤 Frederic W Bickel
- 👤 Thomas B Squire
- 👤 Gerald H Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:18
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/16; C08K; C08K3/00; C08K3/02; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08K3/34; C08K3/346; C08K5/00; C08K5/0008; C08K5/0025; C08K5/04; C08K5/14; C08L23/10; C08L45/00; C08L45/02; C08L53/00; C08L53/02; C08L61/00; C08L61/04; C08L61/06; C08L9/00; C08L93/00; C08L2312/00; C08L2666/00; C08L2666/02
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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |