US3042115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming and/or augmenting an energy wave
Assignee: N A HARDIN
•
Filing: 1954-06-03
•
Granted: 1962-07-03
•
Expires: 1974-06-03
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Brandon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:20
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/24; E21B43/2401; E21B28/00; E21B43/003; Y; Y10; Y10S; Y10S116/00; Y10S116/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1695749A
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US1764194A
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US2548463A
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US2657753A
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US2730176A
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US2738163A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |