US2957985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass spectrometers
Assignee: Consolidated Electrodynamics Corp
•
Filing: 1958-06-05
•
Granted: 1960-10-25
•
Expires: 1978-06-05
Abstract
No abstract record available.
Inventors
- 👤 Wilson M Brubaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:40
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/26; H01J49/28; H01J49/282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2659821A
Cited
US2774882A
Cited
US2769093A
Cited
US2810075A
Cited
US2784317A
Cited
US2772364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |