US2998256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum systems
Assignee: Individual
•
Filing: 1958-02-10
•
Granted: 1961-08-29
•
Expires: 1978-02-10
Abstract
No abstract record available.
Inventors
- 👤 Lipkins Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:52
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/02; B66C1/0237; B66C1/0243; B25; B25B; B25B11/00; B25B11/005; B66C1/0256; G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0663; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836; Y10T137/8593; Y10T137/85978; Y10T137/86083; Y10T137/877; Y10T137/87829; Y10T137/87837; Y10T137/87861; Y10T137/87877; Y10T279/00; Y10T279/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1318350A
Cited
US1041028A
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US1556072A
Cited
US1518984A
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US1598766A
Cited
US1620322A
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US2051662A
Cited
US2288733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |