US2915828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable drafting machine
Assignee: Individual
•
Filing: 1956-09-04
•
Granted: 1959-12-08
•
Expires: 1976-09-04
Abstract
No abstract record available.
Inventors
- 👤 Darrel W Baumbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:02
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/02; B43L13/04; B43L13/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1081758A
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DE468996C
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US2137004A
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US2223428A
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US2331382A
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FR885374A
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GB602184A
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GB650598A
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CH269874A
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GB714010A
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US2803881A
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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) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |