US2631773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mailing sheet
Assignee: Individual
•
Filing: 1946-08-09
•
Granted: 1953-03-17
•
Expires: 1966-08-09
Abstract
No abstract record available.
Inventors
- 👤 Coffin Harry Bigelow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:23
CPC Classifications
B; B42; B42D; B42D15/00; B42D15/02; B42D15/04; B42D15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1319440A
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US738381A
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US867613A
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US886449A
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FR392819A
Cited
US1291889A
Cited
US1561454A
Cited
US1572392A
Cited
US1762084A
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US1871774A
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US1985194A
Cited
US2351805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |