Patent US3396731A successfully refreshed from Google Patents.
US3396731A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1966-12-09
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Granted: 1968-08-13
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Expires: 1986-12-09
Abstract
No abstract record available.
Inventors
- 👤 Peebles David Meade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:20
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/02; B42F17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US331172A
Cited
US1268143A
Cited
US1731950A
Cited
US2247593A
Cited
FR838028A
Cited
US2312594A
Cited
GB834233A
Cited
US2955372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |