Patent US3440390A successfully refreshed from Google Patents.
US3440390A
Expired / Lapsed
US
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Method and apparatus for treating continuous strip material under vacuum
Assignee: Arthur D Little Inc
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Filing: 1966-04-20
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Granted: 1969-04-22
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Expires: 1986-04-20
Abstract
No abstract record available.
Inventors
- 👤 John Engstrom Mccullough
- 👤 Raymond William Moore Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:40
CPC Classifications
B; B23; B23K; B23K15/00; B23K15/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2793282A
Cited
US3301993A
Cited
US3183563A
Cited
BE634718A
Cited
US3325620A
Cited
US3219792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |