US2835512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Banking envelope
Assignee: Curtis 1000 Inc
•
Filing: 1952-05-14
•
Granted: 1958-05-20
•
Expires: 1972-05-14
Abstract
No abstract record available.
Inventors
- 👤 Harlan M Whitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:24
CPC Classifications
B; B42; B42D; B42D15/00; B42D15/02; B42D15/04; B42D15/08; B42D25/00; B42D25/20; B42D25/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US893202A
Cited
US884266A
Cited
US2042823A
Cited
US2112227A
Cited
US2166439A
Cited
GB527730A
Cited
US2302992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |