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US2741472A
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Assignee: Individual
•
Filing: 1949-10-12
•
Granted: 1956-04-10
•
Expires: 1969-10-12
Abstract
No abstract record available.
Inventors
- 👤 Floyd L Thayer
- 👤 Warren L Thayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:09
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/16; B07C5/18; B07C5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1962231A
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US2025606A
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US2127511A
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US2222140A
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US2307695A
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US2508796A
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US2489899A
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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) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |