Patent US2804691A successfully refreshed from Google Patents.
US2804691A
Expired / Lapsed
US
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Mobile drafting apparatus
Assignee: Individual
•
Filing: 1953-08-13
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Granted: 1957-09-03
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Expires: 1973-08-13
Abstract
No abstract record available.
Inventors
- 👤 Justis Charles Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:21
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/02; B43L13/04; B43L13/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US405217A
Cited
US407144A
Cited
US714594A
Cited
CH164866A
Cited
US2100114A
Cited
US2234467A
Cited
US2275251A
Cited
US2488284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |