US2951978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverse pulse generator
Assignee: DAVID T DICKSON
•
Filing: 1957-05-29
•
Granted: 1960-09-06
•
Expires: 1977-05-29
Abstract
No abstract record available.
Inventors
- 👤 Dickson David Thomas
- 👤 John W Van Dyke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:50
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/18; C25D5/60; C25D5/615; C25D5/617; C25D5/627; Y; Y10; Y10S; Y10S204/00; Y10S204/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2634393A
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US2565540A
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US2451341A
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US2575712A
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US2508727A
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US2678909A
Cited
US2696582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |