Patent US3213719A successfully refreshed from Google Patents.
US1454780A
Expired / Lapsed
US
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Water, fire, and germ proof composition
Assignee: CON O LITE CORP
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Filing: 1921-09-29
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Granted: 1923-05-08
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Expires: 1941-09-29
Abstract
No abstract record available.
Inventors
- 👤 Walter E Willett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:09
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/1055; C04B28/00; C04B28/24; C04B28/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-05-07 | 1926-11-06 | 1927-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-05-07 | 1930-11-06 | 1931-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-05-07 | 1934-11-06 | 1935-05-08 | $7700.00 | Window Closed / Lapsed |