Patent US3394900A successfully refreshed from Google Patents.
US3394900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drafting accessory
Assignee: Individual
•
Filing: 1966-09-07
•
Granted: 1968-07-30
•
Expires: 1986-09-07
Abstract
No abstract record available.
Inventors
- 👤 Gross Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:32
CPC Classifications
B; B43; B43L; B43L5/00; B43L5/02; B43L5/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1377461A
Cited
US1469485A
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US1934952A
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US2187547A
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US2474747A
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DE850689C
Cited
US3147681A
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US3245635A
Cited
US3220661A
Cited
US3255977A
Cited
US3288389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |