US2831455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Masking means
Assignee: Lanteris Space LLC
•
Filing: 1955-08-04
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Granted: 1958-04-22
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Expires: 1975-08-04
Abstract
No abstract record available.
Inventors
- 👤 Sadowsky Meier
- 👤 Elmer O Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:15
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/04; C23C14/042; C23C14/046; H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/34; H01J9/00; H01J9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2731947A
Cited
US1141494A
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US1297469A
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US1273861A
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US1429828A
Cited
US1593494A
Cited
US2160714A
Cited
US2657150A
Cited
US2695593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |