Patent US3548552A successfully refreshed from Google Patents.
US3548552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colorbook playhouse
Assignee: Individual
•
Filing: 1969-07-14
•
Granted: 1970-12-22
•
Expires: 1989-07-14
Abstract
No abstract record available.
Inventors
- 👤 Darvil David Mcbride
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:39
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/044
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE329343C
Cited
US1881356A
Cited
US2157688A
Cited
US2460169A
Cited
US2441076A
Cited
US2825150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |