US2828975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pocket secretary
Assignee: Individual
•
Filing: 1957-04-15
•
Granted: 1958-04-01
•
Expires: 1977-04-15
Abstract
No abstract record available.
Inventors
- 👤 Wright Charles Buford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:52
CPC Classifications
B; B42; B42F; B42F7/00; B42F7/06; B42D; B42D5/00; B42D5/003; B42D5/005
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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |