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US3508249A
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Assignee: Gordon Engineering Co
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Filing: 1966-04-04
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Granted: 1970-04-21
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Expires: 1986-04-04
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:58
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/66; H03M1/74; H03M1/80; H03M1/808
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3184734A
Cited
US3210754A
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US3223994A
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US3320409A
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US3247507A
Cited
US3366947A
Cited
US3307173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |