Patent US2879609A successfully refreshed from Google Patents.
US2879609A
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US
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Booklet having attached thereto a writing pad for receiving temporary images
Assignee: WATKINS STRATHMORE Co
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Filing: 1953-12-23
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Granted: 1959-03-31
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Expires: 1973-12-23
Abstract
No abstract record available.
Inventors
- 👤 Daniel H Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:28
CPC Classifications
B; B42; B42D; B42D1/00; B42D1/003; B42D1/008; B42D1/001; B42D3/00; B42D3/12; B42D5/00; B42D5/003; B42D5/005; B42D5/006; B42P; B42P2241/00; B42P2241/16; B42P2241/18
Claims Analysis
Total Claims: 0
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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) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |