US3338511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mail signal device
Assignee: Individual
•
Filing: 1965-10-20
•
Granted: 1967-08-29
•
Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Harry J Cvar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:07
CPC Classifications
A; A47; A47G; A47G29/00; A47G29/12; A47G29/1209; A47G29/121; A47G2029/12105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US926613A
Cited
US1992275A
Cited
US2483992A
Cited
US2730298A
Cited
US2874895A
Cited
US3027826A
Cited
US3102684A
Cited
US3042293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |