Patent US2904927A successfully refreshed from Google Patents.
US2904927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular construction kit
Assignee: Individual
•
Filing: 1958-05-08
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Granted: 1959-09-22
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Expires: 1978-05-08
Abstract
No abstract record available.
Inventors
- 👤 Katz Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:37
CPC Classifications
G; G09; G09B; G09B25/00; G09B25/04; A; A63; A63H; A63H33/00; A63H33/04; A63H33/06; A63H33/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1830382A
Cited
US1828309A
Cited
US1935542A
Cited
US2204319A
Cited
FR1001209A
Cited
FR56228E
Cited
FR1007756A
Cited
AU204260B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |