US3473072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mount for electric vacuum devices
Assignee: Individual
•
Filing: 1967-03-01
•
Granted: 1969-10-14
•
Expires: 1987-03-01
Abstract
No abstract record available.
Inventors
- 👤 Nikolai Dmitrievich Ivano
- 👤 Fridrikh Davydovich Kaminsky
- 👤 Vladimir Ilich Kuznetsov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:20
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/42; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1488613A
Cited
US2071597A
Cited
GB917492A
Cited
US3213182A
Cited
US3138733A
Cited
US3255377A
Cited
US3379823A
Cited
US3388279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |