US3241740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum pumping methods and apparatus
Assignee: Consolidated Vacuum Corp
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Filing: 1963-10-16
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Granted: 1966-03-22
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Expires: 1983-10-16
Abstract
No abstract record available.
Inventors
- 👤 Allen R Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:58
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/12; H01J41/18; H01J41/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A VACUUM PUMP COMPRISING: (A) A PUMP HOUSING; (B) ION VACUUM PUMP MEANS INSIDE THE PUMP HOUSING; AND (C) A RECEPTACLE INSIDE THE THE PUMP HOUSING, THE INSIDE OF THE RECEPTACLE COMMUNICATING WITH THE INSIDE OF THE PUMP HOUSING; AND (D) A SUPPLY OF GRANULES OF GAS SORBENT MATERIAL IN SAID RECEPTACLE.
Claim 2
Dependent Claim
52 words
A VACUUM PUMP COMPRISING: (A) A PUMP HOUSING; (B) ION VACUUM PUMP MEANS INSIDE THE PUMP HOUSING; AND (C) A RECEPTACLE INSIDE THE THE PUMP HOUSING, THE INSIDE OF THE RECEPTACLE COMMUNICATING WITH THE INSIDE OF THE PUMP HOUSING; AND (D) A SUPPLY OF GRANULES OF GAS SORBENT MATERIAL IN SAID RECEPTACLE.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |