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US2881766A
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Assignee: GEORGE B GRAFF Co
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Filing: 1956-02-06
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Granted: 1959-04-14
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Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 Sven A E Tornsjo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:33
CPC Classifications
B; B42; B42F; B42F19/00; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44641; Y10T24/44769; Y10T24/44889; Y10T24/44906; Y10T24/44923
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US213306A
Cited
US850245A
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US941273A
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US2184569A
Cited
FR992957A
Cited
US2664089A
Cited
FR1115239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |