Patent US2313728A successfully refreshed from Google Patents.
US2313728A
Expired / Lapsed
US
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Tanning
Assignee: EIDP Inc
•
Filing: 1941-10-06
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Granted: 1943-03-16
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Expires: 1961-10-06
Abstract
No abstract record available.
Inventors
- 👤 Paul R Austin
- 👤 William E Lundquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:15
CPC Classifications
C; C14; C14C; C14C3/00; C14C3/02; C14C3/08; C14C3/22
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) | 1946-03-15 | 1946-09-14 | 1947-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-03-15 | 1950-09-14 | 1951-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-03-15 | 1954-09-14 | 1955-03-16 | $7700.00 | Window Closed / Lapsed |