Patent US2829436A successfully refreshed from Google Patents.
US2829436A
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US
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Assignee: Individual
•
Filing: 1955-12-23
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Granted: 1958-04-08
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Expires: 1975-12-23
Abstract
No abstract record available.
Inventors
- 👤 Henry E Leinwebber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:16
CPC Classifications
B; B25; B25H; B25H7/00; B25H7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US787893A
Cited
US1166968A
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US1280379A
Cited
US1475104A
Cited
US1737726A
Cited
US2603002A
Cited
US2686972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |