US2604955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for analyzing seismographic records
Assignee: Seismograph Service Corp
•
Filing: 1946-04-18
•
Granted: 1952-07-29
•
Expires: 1966-04-18
Abstract
No abstract record available.
Inventors
- 👤 James E Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:28
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/28; G01V1/36; G01V1/364; G01V2210/00; G01V2210/20; G01V2210/21
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US463188A
Cited
US520106A
Cited
US1555281A
Cited
US2085205A
Cited
US2243729A
Cited
US2243730A
Cited
US2313091A
Cited
US2521130A
Cited
US2490461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |