US3372936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking bar puzzle comprising helically notched bars
Assignee: ROBERT E SANSON
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Filing: 1965-08-27
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Granted: 1968-03-12
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Expires: 1985-08-27
Abstract
No abstract record available.
Inventors
- 👤 Robert E Sanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:20
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/06; A63F9/12; A63F9/1252; A63F2009/1256; A63F2009/126; A63F2009/1268; A63F2009/1272; A63F2009/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PUZZLE COMPRISING TWENTY-FOUR BARS OF EQUAL LENGTH AND CROSS-SECTION ARRANGED IN TWO RESPECTIVE SETS OF TWELVE IDENTICALLY-NOTCHED REVERSIBLE BARS, SAID NOTCHES BEING DISPOSED HELICALLY AROUND THE BARS, THE NOTCHES OF THE BARS IN ONE SET BEING RESPECTIVELY INTERENGAGEABLE WITH THE NOTCHES OF THE BARS OF THE OTHER SET TO FORM A SYMMETRICAL SELF-SUSTAINING STURCTURE.
Claim 2
Dependent Claim
55 words
A PUZZLE COMPRISING TWENTY-FOUR BARS OF EQUAL LENGTH AND CROSS-SECTION ARRANGED IN TWO RESPECTIVE SETS OF TWELVE IDENTICALLY-NOTCHED REVERSIBLE BARS, SAID NOTCHES BEING DISPOSED HELICALLY AROUND THE BARS, THE NOTCHES OF THE BARS IN ONE SET BEING RESPECTIVELY INTERENGAGEABLE WITH THE NOTCHES OF THE BARS OF THE OTHER SET TO FORM A SYMMETRICAL SELF-SUSTAINING STURCTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |