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US2947041A
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Assignee: Individual
•
Filing: 1958-06-23
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Granted: 1960-08-02
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Expires: 1978-06-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur G Imbrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:46
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/82; E04B2/821; E04B2/822; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49629
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US940323A
Cited
US1752101A
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US2443548A
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US2681483A
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US2763038A
Cited
FR1089634A
Cited
US2849758A
Cited
US2877875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |