US2769911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass spectrometer for analysing substances or indicating a small amount of a determined substance
Assignee: Hartford National Bank and Trust Co
•
Filing: 1953-04-23
•
Granted: 1956-11-06
•
Expires: 1973-04-23
Abstract
No abstract record available.
Inventors
- 👤 Warmoltz Nicolaas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:46
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/26; H01J49/28; H01J49/32; H01J49/328; G; G01; G01T; G01T1/00; G01T1/16; G01T1/28; H01J49/02; H01J49/025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2422264A
Cited
US2599166A
Cited
US2642535A
Cited
US2543859A
Cited
US2720593A
Cited
US2664515A
Cited
US2625653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |