US2842055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive charge container
Assignee: Seismograph Service Corp
•
Filing: 1954-04-23
•
Granted: 1958-07-08
•
Expires: 1974-04-23
Abstract
No abstract record available.
Inventors
- 👤 Richard D Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:48
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/08; F42B3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US969186A
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US2238939A
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US2326310A
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US2305729A
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US2481814A
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US2605703A
Cited
US2494256A
Cited
US2683414A
Cited
DE851474C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |