US3038731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum sealing means for low vacuum pressures
Assignee: Individual
•
Filing: 1958-03-14
•
Granted: 1962-06-12
•
Expires: 1978-03-14
Abstract
No abstract record available.
Inventors
- 👤 Milleron Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:33
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/03; F; F16; F16J; F16J15/00; F16J15/02; F16J15/16; F16J15/40; F16J15/403; F16L; F16L23/00; F16L23/16; F16L23/18; F16L23/20; G; G21; G21C; G21C13/00; G21C13/02; G21C13/028; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S277/00; Y10S277/904; Y10S277/921; Y10S277/935; Y10S277/939; Y10S277/94
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |